5UBJLCT INDLXTHL JOURNAL OF INDUSTRIAL AND EN G IN EER IN G CHLMI5TRY

VOL. II, 1910A b b r e v i a t i o n s ; P . = P a te n t. A bs. =» A b s trac t. E d . =» E d ito ria l. A dd . => A d d ress . Cor. =» C orrespondence.

A B S T R A C T S of p ap e rs rea d before th e sem i-annual m eeting of th eA m erican I n s t i tu te o f C hem ical E ngineers. N iag ara Falls. C a n . . 363

A ccuracy in sam pling. F red C. W eld (N ote)......................................................426A ccuracy in tak in g a n d p rep arin g m ixed fertilizer sam ples. F . B .

P o r te r ........................ .................................................... 148A ccu ra te m ethod fo r calo rim etric de te rm in atio ns o n a n th rac ite coal,

an . O scar W . P a lm en b erg .................................................................................404A cetic anh y d rid e u sed in th e L ieberruann-Storch reac tio n , possible

c o n tam in atio n of. Chas. S. P a lm er............................................................ 104A cid in hyd ro gen peroxide so lu tions, th e determ in atio n of free. L in-

w ood A . B row n........................................ 377A ction of su n lig h t an d a ir u pon som e lubricating oils, th e . C. E .

W a te r s . .................................................................................................................... 451A ddress, o n occasion of aw ard of P erk in M edal to D r. E d w ard G ood­

rich A cheson. L . H . B aek elan d ................................................................... 102A ddresses...............................................25, 63. 99. 153, 216, 353, 423, 466. 534A dvance N ew E ng land chem istry (E d .) ........................................................... 397A fter-effec ts o f ce rta in p ho sp ha tes on lin ied an d unlim ed land . H . J .

W h ee le r..................................................................................................................... 133A gita tin g so lu tions, som e prob lem s in th e m an u fac tu re an d ag ita tio n

of su lp h ide so lu tions, dissolving chem icals and . O skar N agel,P h .D ........................................................................................................................... 341

A ir-n itra te s in th e U nited S ta te s (N o te ).........................................................495A ir u p o n som e lu b rica tin g oils, th e ac tio n of su n lig h t and . C. E .

W 'atcrs....................................... 451A ir p u rifica tion , p re se n t s ta tu s of ozone w ith reference to . R alp h D.

S m all (A dd .)........................................................................................................... 534A lb e rt E rn e s t Leach. A. L . W in to n ...................................................................... 449A lkali w ate rs on lead arsenates, fu r th e r s tud ies of reac tions o f lime-

su lfu r so lu tion and . C. E . B rad ley a n d II . V. T a r ta r ........................328A llen 's C om m ercial O rganic A nalysis, H en ry L eiim ann an d W . A.

D av is (B ook)........................................................................... 104, 390A lloy, a new (N o te ).........................................................................................................494A lloys, m aking sam ple. R . C. B enner (N o te )................................................... 546A lloys o f n ickel a n d co b a lt w ith chrom ium . E lw ood H ay n es 397A m erican Chem ical Society , B oston m ee tin g ..................... 67, 360» 487. 550A m erican exposition , B erlin, 1910...................................................................... 105A m erican E lectrochem ical S oc ie ty ................................................... 392, 436, 484A m erican In s t i tu te o f Chem ical E ng ineers ...................30, 222, 331, 430, 550A m erican I ro n and S tee l In s t i tu te , t h e . ..................................... , ...................486A m erican L ea th e r C hem ists’ A ssocia tion ............................................. 487A m erican M edical A ssociation . New an d Non-Official R em edies, 1910

( B o o k ) . . ........................................................................................................ 221A m erican S ociety for T esting M ate ria ls ..................................................................332A m m onia , m eth od s for testing com m ercial, anh y d ro u s liqu id . W . D.

R ich a rd son .............................................................................................................. 97A m m oniates in com m crcial fertilizers, d etec tion o f in ferior. Jo h n P .

S t r e e t . . . ................................................................................................................... 311A nalyses o f w a te r from G rea t S a lt L ake , com parative . W . C. E bau gh

and W allace M acF arlane ........................................................................... 454A nalysis, carbonic oxide in illum ina ting gas, 9 ; m oistu re de te rm in atio n

in cereals, 19; exam in a tio n of foods for salicylic a d d , 24; iron and a lum ina inorgan ic p la n t con s titu en ts , 27; casein in p ap e r, 28; linseed oil foo ts. 28; fish oils in v egetab le oils, 43; phosphorus, 45; e th e r e x tra c t o f spices, 47; carbon b y com bustion, 66; m oistu re by d istilla tio n , 66; B a b b itt m eta ls, 80; m edicinal p laste rs , 94; liqu id am m onia, 97.; S pan ish p ap rik a . 139; cane sugar, 143; av a il­ab le n itrogen , 146; phosphoric acid , 157; p ho sp ha te rock , 158; lu brican ts , 171; a sp h a lt, 181; copper, 1S7; copper in o res, 195; su lp h u r in p y rite , 196; C andelilla w ax, 203; Chinese wood oil, 205; sodium chloride in m ilk , 210; beef flesh. 215; assay for silver and gold , 251; soil h um u s, 269; lim e-su lphur sp ray , 271; c rude fiber, 280; c rude fiber, 2S1; su lp h u r in b ra ss an d bronze, 293; vola tile m a tte r in coal, 304; h um u s. 317; gas. 337; z inc in ores, 375; free acid in hyd ro gen perox ide . 377; cocaine an d stry chn in , 378; v o lu m etric d e te rm in a tio n o f po tassium , 379; su lp h u r in illum ina­ting gas, 385; p a in t, 3SS; caram el, 389; fusel oil, 389; an th rac ite coal, 404; calcium oxide in lim e, 407; capsicum , 419; w ater from g re a t s a lt lake, 454; C andelilla w ax , 454; Chinese t e a soils, 462; n itro g en , 463; chrom e p a in t. 4S2; sodium ben zoa te in catsups,544; o rgan ic n itrogen a v a ilab ility .................................................................546

* A nalysis, a u se for th e G ooch in p a in t. W arren I . K ee ler..................... 883A nalysis o f B a b b itt m eta ls, solders an d jo u rn a l brasses. D . J . D em -

o rc s t............................. . . ............. 80

A nalysis, chrom e p a in t. E . F . Sclierubel a n d E . S . W ood (N ote) — . 482 A nalysis as show n in trac ing th e cause of ty p h o id fever epidem ic in

G eorgia, th e value of a chem ical. H . B . A rb u ck le ............................. 349A naly tica l a n d in d u s tria l investig a tio n s a t low tem p era tu re s , a con­

v en ien t m eth od of refrige ra tio n for. Jam e s O. H a n d y ...................... 92A na ly tica l processes, th e im p ro vem en t of. W . D. R ic h a rd so n ............... 99A nalyzed Iro n an d M anganese O res, M ethods of A nalysis. B u reau of

S tau d ard s (B ook)........................................................... 429A nhydrous, liqu id am m onia , m ethods for te stin g com m ercial. W . D.

R ich ard son ............................................................................................................... 97A node, a ro ta tin g g raph ite . J . W . T u rren tin e ................................................... 342A n th rac ite coal, an accu ra te m eth od for calo rim etric de te rm in atio ns

o n. O scar W . P a lm en b e rg .............................................................................. 404A pp a ra tu s , a n extr ac tion . S am uel M. B a in ........................................................ 455A p p ara tu s, som e labo ra to ry devices.........................................................................360A p p a ra tu s for sm elting ores y ield ing a vola tile m eta l. W oolsey McA.

Jo hn son ( P .) .............................................................................................................. 394A pp lica tion o f science to in d u s try , th e (E d .) ...................................................... 498A pplica tion of p a in t, scientific p re p a ra tio n and . G . W . T h o m p so n .. 87A pp lica tion of e lec tro s ta tic sep ara tio n to o re dressing. F . S. M ac­

G regor................................. 517A rt of enam eling m eta ls. Geo. L . R ice an d B enj. W . G ilch ris t ( P . ) . . 555A safctida. W . A . P ea rso n ........................................................................................... 421A sp h a lt exam ina tion , m ethods of. A lb e rt S om m er...................................... 181A sphalt, s tud ies in . C. J . F ra n k fo r te r ................................................................ 239A ssay for silver, th e effect of v a ry in g am o u n ts of litha rge in th e fire.

K en n eth W illiam s....................................................................................................406A ssay o f m edicinal p laste rs . F rederick B . K ilm er......................................... 94A ssociation of Official A gricu ltu ra l C hem ists............................................ 391. 551A tro p in a n d s try ch n in w hen th ey occu r together, sep a ra tio n a n d de­

te rm ina tion on cocain an d s try ch n in , and . II . C. F u lle r ..................... 378A u to m a tic p ip e tte , an . J . B osley T ho m as ................................. ........ ............. 330A vailab le calcium oxide in lim e used in cyan ide w ork, ra p id e stim atio n

of. L . W . B ah n ey ............................................................................................... 407A vailab ility o f soil n itrogen in re la tio n to th e b as ic ity of th e soil a n d

to th e g row th of legum es. T . L . L yon a n d J a s . A . B izzell 313A vailab ility o f soil pho sp ha tes. W . P . K elley .............. ... .............................. 277A vailab ility , lab o ra to ry m eth od s for o rgan ic n itrogen . C. H . Jones

(N o te )........................................................................................................................ 546B a b b i t t m eta ls, so lders a n d jo u rn a l b rasses, th e analysis of. D . J .

D em orest.................................. 80B acke’s in ves tig a tio n o f m alto l an d isom alto l. n o te o n . H . C. Sher­

m a n ............................................................................................................................. 426B ac teria l a c tiv ity as a corrosive influence in th e soil. R ic h a rd H .

G aines .................................................................... 128B acterio log ical m eth od s for determ in ing th e ava ilab le n itrogen in

fertilizers. J aco b G. L ip m an .......................................................................... 146B akelite (N o te ) ......................................................... 545B ak e lite inven tions, resin ite a n d (N o te ).............................................................. 494B ake lite an d res in it. D r. L. H . B aekeland (C o r.) .........................................478B eef flesh, th e glycogen c o n te n t of. P . F . T row bridge a n d C. K .

F ran c is ....................................................................................................................... 21Beef flesh, glycogen c o n te n t of. P . F . T row bridge an d C. K . F r a n c is , . 215B ee t S ugar M aking a n d I t s C hem ical C ontrol. Y . N ik a ido (B o o k ).. 159B enzene in illum inating gas, a com parison o f th e efficiency o f O tto

Pfeiffer's an d D enn is a n d M cC arthy 's m eth od fo r determ in ing .E . P . H ard ing a n d C arl T ay lo r.................................................................... 345

B enzoate in ca tsu ps, th e m odified L aW all m eth od for th e d e te rm in a ­tion of sodium . W . D . M cAbee (N o te ) . ............................................... 544

B essem er rails , use of ferro -titan iu m in. P . H . D u d le y ............................ 299B in ary liqu id m ix tu re s , d ifferen tial condensation in d is tilla tio n and

rectifica tion of. A lcan H irsch ................................................................. 409B olling’s, H a rd in g ’s an d D re h sth m id t’s m eth od s for dete rm in ing

su lp h u r in illum ina ting gas, a com parison of. E . P . H ard ing andCarl T ay lo r .............................................................................................................. 385

B o o k R e v i e w s : F oo d In sp ectio n a n d A nalysis (L each), 29; U n te r­suchung d er M ineralöle u n d F e t te (H olde), 29; Chem iker K alend a r (B iederm ann), 29; I ro n O res, B uild ing S tones an d O th er M inerals (W est V irg in ia G eological S u rv ey ), 29; A T ex t-B ook o f B o tan y a n d P harm acognosy (K raem er), 104; T he M anufac ture o f P ap e r (S indall), 104; A llen’s C om m ercial O rganic A nalysis. 104; P roducer G as-F ired F urn aces (N agel), 104; C hem isch-T echnische U n te r­suchungsm ethoden (Lunge a n d B erl), 105; B ee t S ugar M aking

SUBJECT INDEX. 569and I t s C hem ical C ontrol (N ikaido), 159; F un g u s D iseases of P lan ts (D uggar), 294; D u st P rev en tiv es and R o ad B inders (H u b bard ), 295; Solid B itum ens (P eckham ), 331; Les Secheries Agricoles (S idersky), 360; M etallography (Desch), 390; A llen’s C om m ercial O rganic A nalysis, Vol. I I , Oils and F a ts , 390; T heorie d er G ew in­n ung u n d T ren nu n g der A ethcrischcn Oelc durch D istillation (von R echenberg), 390; Technologie der F e tte u n d Oelc (H efter), 391; T he P o ly techn ic E ngineer, 391; E ngineering C hem istry (S tillm an), 391; Chem ische Technologie der N euzeit (D am m cr). 428; V an N o s tran d ’s Chem ical A nn u al (Olsen), 428; F uel and R efrac to ry M aterials (S ex ton), 428; T he Corrosion and P rese rv a ­tion o f I ro n a n d S tee l (Cushm an a n d G ard ner), 483; Soil F e rtility and P erm an en t A gricu ltu re (H opkins), 483; T he C hem ists’ P ock e t M anual (M eade), 484; A T ex t-B ook of B o tan y a n d P h a r ­m acognosy (K racm er). 549; H an d bu ch der Chemie und T echnol­ogie der Ocle u n d F e t te (U bbelohde and G oldschm id t), 549; Chem isch-Technische U ntersuchungsm ethoden (Lunge an dB eri) ........................................................................................................................... 550

B ook R e v ie w s and N o t ic e s .......................... 29, 104. 159, 221, 294, 331, ................................................................................. 360, 390, 428, 484, 549

B orax in d u s try , th e . F . M. D u p o n t ...........................................................500B rass a n d bronze, de te rm in atio n of su lp h ur in . G ustav T h u rn a u e r . . 293B rick w ork, efflorescence on. A . F . G reaves-W alker....................................373B ricks, som e im perfec t p av ing . Jam e s C. L aw rence and C harles J .

B o n e r ........................................................................................................................ 524B riq u e ttin g of iron ores (N o te ) ............................................................................... 558B ronze, d e te rm in atio n of su lp h ur in b rass and . G u s ta v T h tirn a u e r .. 293 B russels ' exposition , chem ical in d u s try a t. R ay L. F erguson (N o te ) . 547B ureau o f M ines, exp losib ility of coal d u s t (N o te ) .......................................... 427B ureau of S tan d ard s , S tan d a rd A nalyzed Sam ples— G eneral In fo rm a tio n

(B ook)....................................................................................................................... 428B ureau o f S tan d ard s , chem istry in the. W . F . H illeb ran d (A d d .) . . . . 423 B ureau of S tan d a rd s ’ A nalyzed Iro n a n d M anganese Ores, M ethods

of A nalysis (B ook).............................................................................................. 429B ureau of S tan d ard s , analyzed sam p les....................................................... 103, 359B u tte rm ilk , th e p re p a ra tio n of cu rd from . J . L, S am m is................ 142C A L C IU M , efficiency in th e e lec tro ly tic p ro d u ctio n of m etallic .

F ran c is C. F ra ry , H en ry R . B icknell a n d Carl A. T ro n so n ................. 522Calcium in cream , re la tio n b etw een f a t and . H erm an C. L ythgoe

a n d C larence M arsh ............................................................................................... 327Calcium o x ide in lim e used in cyan ide w ork, rap id estim ation of ava il­

able . L . W . B ah n ey .......................................................................................... 407C alcium , th e e lec tro ly tic p rep a ra tio n of. A rden R . Jo hn son (A d d .) .. 446C alorim eter, a new gas. S. W . P a r r ....................................................................... 337C alo rim etric d e te rm in atio ns on a n th rac ite coal, an accu ra te m ethod

for. O scar W . P alm en b erg ............................................................................. 404C am paign o f 1910, th e . A . D . L ittle (E d .) ................ 33C andelilla w ax . c o n stitu en ts of. G . S. F rap s and J . B . R a th e r 454C andclilla w ax , exam in a tio n of. R . F . H are an d A. P . B je rrcg aard . . 203Cane in sugar m an u fac tu re con tro l a p p a ra tu s , th e m illing of. G. L.

S pen cer........................................................................................... 253C ane sugar b y th e use of invcrtase , th e q u a n tita tiv e determ in atio n of.

C. S. H u d so n .................................................. 143C apsaic in , th e p u n g e n t p rinc ip le o f capsicum , an d th e detec tion of

capsicum . E . K . N elson ................................ 419C apsicum , a n d th e detec tion of capsicum , capsaicin , th e p un g en t

principle of. E . K . N elson .............................................................................. 419C aram el, iden tifica tion te s t for. G. H . P . L ic h th a rd t ..................................389C arbenes, fo rm atio n of. B asil W . A lex an d er....................................................242C arbon b y com bustion , pu tash b u lb for. N . A. K oenig (N o te ) 66C arbonic oxide in illum ina ting g as b y iodine pen toxide , th e de te rm in a­

tion of. A. H . G ill an d E . H . B a r t l e t t ................................................. 9C arbon in th e v irg in a n d fallow ed soils of E as te rn O regon, n itrogen

an d . C. E . B rad ley ............................................................................................ 138C arbon te trach lo rid e an d n a p h th a , flash, fire a n d explosion te s ts on

m ix tu res of. E dw . A. B a rr ie r ...................................... 16C ar p a in tin g prac tice , v aria tio n s in . C arl F . W o o d s....................... 130C arbenes. s tud ies 011 th e . K en n eth G. M ackenzie........................................ 124C ast copper ( E d . ) ...................................................................................................... 451C ast copper of high electrical con d u ctiv ity . D r. E< W ein trau b (A d d .). 477 C atsups, th e m odified L aW all m eth od for th e dete rm in atio n of sodium

b enzoate in. W . D. M cAbee (N o te )........................................................... 544C em ent from b la s t fu rnace slag (N o te ) ..................... 561Cereals, th e m oistu re de te rm in atio n as app lied to . S herm an L e a v i t t . . 19C hanges in in d u s tria l chem istry caused b y elec tric ity . E dw ard R .

T ay lo r (A b s .) ...................................................................................................... 364Chem ical analysis as show n in trac ing th e cause o f ty p h o id fever

epidem ic in G eorgia, th e v alu e o f a. H . B . A rb u ck le .............................349Chem ical com position of K afir corn , th e . R . O. B aird and C. K .

F ran c is ...................................................................................................................... 531Chem ical and m ineralogical exam in a tio n of some Chinese tea soils.

th e . W , 6 . R obinson an d W . J . M cC aughey .................................. 462Chem ical E ngineering E du catio n (E d .) ................................................................ 397Chem ical in d u s try a t B russels’ exposition . R a y L . F erguson ( N o te ) . . 547 Chem ical labo ra to ry , hygiene of th e sm all. E d w ard K e lle r......................246

Chem iker K alender, 1910. D r. R udo lf B iederm ann (B o o k )................... 29C hem isch-Technische U nte rsuchungsm ethoden . Geo. L unge a n d

E rn s t Berl (B ook)............................................... 105, 550Chem ische-Tcchnologic dcr N euzeit. D r. O tto D am m er (B o o k ) 428C hem istry , advance N ew E ng land (E d .) ............................................................. 397C hem istry in th e B ureau of S tan d ard s . W ; F . H illeb ran d (A d d .) 423C hem ist to p ro p rie ta ry m edicines, th e re la tion o f th e . W . A. P uck-

n e r ............................................................................... 155C hem ists’ bu ild ing ..................... 548C hem ist’s p lace in in d u s try , th e . A. D . L it t le ............................................. 63C hem ists’ P ocket M anual. T he. R ich a rd K . M eade (B o o k )......................4S4Chinese tea soils, th e chem ical an d m ineralogical exam ination of some.

W . O. R obinson an d W . J . M cC aughey.........................................................462Chinese wood oil, con s tan ts of. A dolph K re ik cn b au m ..................................205Chrom e p a in t analysis. E . F . Scherubel and E . S. W ood (N o te ) 4S2C hrom ium , alloys of n ickel a n d cob a lt w ith . E iw ood H ay n es 397Coal, an accu ra te m eth od for calo rim etric d e te rm in atio ns o n a n th ra ­

cite . O scar W . P alm enberg .............................................................................. 404Coal d u s t, exp losib ility of, B ureau of M ines (N o te ) ...................................... 427Coal, i t s d e te rio ra tion in storage. A . B em ent (A b s.)....................................365Coal, losses in th e s torage of. H orace C. P o rte r a n d F . K . O v itz 77C oal, some v aria tio n s iu official m ethod for d e te rm in atio n o f vola tile

m a tte r in . A . C. F icldner a n d J . D: D av is ................................. 304C obalt w ith chrom ium , alloys of n ickel and . E iw ood H a y n e s .................397C ob a lti-n itrite m ethod , vo lu m etric determ in atio n of po tassium b y the.

O. M. S liedd ..................... 379Cocain, n o te on th e v o la tility of. H . C. F u lle r ............................................... 426Cocain an d stry chn in , a n d a tro p in an d stry chn in w hen th ey occur

to ge ther, separa tio n an d d e te rm in atio n of. H . C. F u lle r 378Coefficient o f expansion in glycerine. A rth u r M. Com ey a n d C ed i F .

B ack us ...................................................................................................................... 11C olum bia and W illam ette rivers, w a te r of. C. E . B ra d cy .......................... 293C om m erdal, anhydrous, liqu id am m onia , m ethods for te stin g . W . D.

R ich a rd son .............................................................................................................. 97Com m ercial c a ld u m h y d ra te , i ts m an u fac tu re a n d uses. L u d u s E .

A llen (A bs.)...................................... 363Com m ercial fertilizers, d etec tion of inferior am m onia tes in . Jo h n P.

S tre e t ........................................................................................................................ 311C om parative analyses of w a te r from G rea t S a lt L ake. W . C. E baugh

an d W allace M acF arlane ................................................................................... 454C om parison of B olling’s, H ard in g 's and D rehschm id t’s m ethods for

determ in ing su lp h u r in illum ina ting gas, a. E . P . H ard ing andCarl T ay lo r .............................................................................................................. 385

C om parison o f th e effidency o f O tto P fd ffe r’s an d D ennis a n d Mc­C arth y ’s m ethod for determ in ing benzene in illum inating gas, a.E . P . H ard ing and C arl T ay lo r ........................................... 345

Com parison of th e m ethods for depositing iron c lec tro ly tica lly . S.A. T ucker an d E . S ch ra m m .................................................................... . . 237

Com position o f K afir corn , th e chem ical. R . O. B aird a n d C. K .F r a u d s . ........................................................................ ........................... 531

Com position of lim e-sulfur sp ray . H . V . T a r ta r and C. E . B ra d le y .. . 271Com pounds, uses for ra re e lem ents an d sp ed a l. G elle rt A llc m a n . 237C ondensation in d istilla tion an d rec tifica tion o f b in a ry liquid m ix tu res ,

differential. A lcan H irsch ........................... 409Condenser used for ex trac tio n , no te o n a . D av id B loom .......................... 103C onductiv ity , cas t copper of h igh e lec trica l. D r. E . W e in trau b (A d d .) . 477 C onservation an d u tiliz a tio n in th e P ad fic N orthw est. H . K , B enson . 100C onstan ts o f Chinese w ood oil. A dolph K rd k e n b a u m ............................... 205C on stitu en ts of Candclilla w ax . G . S. F rap s and J . B . R a th e r 454C onvenient d ry in g oven, a . M. M. M acLean (N o te ) ................ 480C on tribu tion o n jelly -m aking . N . C. G o ld th w a ite ...........................................457C on trib u tion to o u r know ledge o f th e n itrogen p rob lem u nd er d ry

farm ing , a . F . J . A lw ay an d R . S . T ru m b u l l . ..................... 135C onvenient m eth od of refrige ra tio n for a n a ly tica l an d in d u s tria l in ­

ves tigations a t low tem p era tu re s (75° C .). Jam es O. H a n d y . . . 92C opper, c as t (E d .) ......................................................................................................... 451C opper o f h igh electrical con d u ctiv ity , cast. D r. E . W e in trau b (A d d .) . 477 C opper in b lis te r and refined copper, d e te rm in atio n of. W illiam C.

Ferguson ................................... ............................................................................... 187C opper in ores, a ra p id m ethod for th e e lec tro ly tic de te rm in atio n of.

R . C. B enner........................................................................................................... 195Cost of ava ilab le n itrogen . E d w ard B. V oorhees........................................ 153Corn, th e chem ical com position of K afir. R . O. B aird a n d C. K .

F r a n d s ........................................... 531C orrections........................................... 496, 564C orrosive influence in th e soil, b ac te ria l activ ity’ as a. R ich ard H .

G ain es ........................................................................................................................ 128C orrosion an d P reserv a tio n of Iro n a n d S tee l, T he. A llcrton S. C ush­

m an a n d H en ry H . G ard ner (B ook)................................................................483C orrosion of iron and steel an d i ts p reven tion , n o te o n th e . G ustave

W . T hom pson (A bs.)................................................................ 364C ream , re la tio n betw een fa t and c a ld u m in. H erm an C. L ythgoe

and C larence M arsh ....................................... 327C ru d b le assay of p y ritic con cen tra tes for silver a n d gold. George

B orro w m an ............................................................................................................. 251C ru d b le and su pp o rt. Chas. E . S w ett (N o te ) ............................................. 67

5 7 0 THE JOURNAL OF IND U STRIAL A N D ENGINEERING CHEMISTRY. Dec., 1910

C rude fiber, determ in atio n of. G. M. M acN ider.......................................... 281Crude fiber, rap id m eth od of determining:. J . M. P iclcel............................... 280C urd from b u tte rm ilk , th e p re p a ra tio n of. J . L . S am m is.......................... 142C yanide w ork, ra p id estim atio n of ava ilab le calcium oxide in lime

used in. L . W . B a h n c y ...................................................................................... 407D E T E C T IO N of in ferior am m onia tes in com m ercial fertilizers. Jo h n

P hillips S tre e t........................................................................................................... 311D ete rm in atio n of n itrogen b y th e K je ldalil m ethod , no te o n th e . P . L.

H ib b a rd .......................................................................................................................463D ete rm in atio n , ra p id sapon ification of f a t for titrc . Chas. V.

Zoul (N o te ) ....................................................... 479D ete rm in atio n of phosphoric acid b y th e official vo lum etric m ethod .

F . B. C arp en te r ................................ 157D ete rm in atio n o f sodium b enzoate in catsups, th e m odified L aW all

m eth od for the. W . D. McAbee (N ote)...* ............................................... 544D ete rm in atio n o f m ercury in th e m ercu ry sa lts of th e pharm acopoeia.

B. L. M urray (N o te ) ....................................................................................... 481D etectio n of fish oils in v egetab le oils. the. O tto E isenschim i a n d H . N.

C op thorne .......................................................................... ..................................... 43D ete rm in atio n o f carbonic ox ide in illum inating gas b y iodine pen toxide.

A ug u stu s I I . G ill an d E . H . B a r t le t t .............................................................. 9D ete rm in atio n of su gar lo st b y en tra in m en t from E v ap o ra to rs , th e .

R . S. N orris ............................................................................................................. 401D ete rm inations o n a n th ra c ite coal, an accu ra te m ethod fo r calorim etric .

O scar W . P alm en b erg ......................................................................................... 404D ete rm in atio n of phosphorus re ta in e d w ith ferric chloride in th e

e th e r sep ara tio n . R . J . W y so r...................................................................... 45D ete rm in atio n of lead in ores b y e lectro lysis w ith s ta tio n a ry electrodes,

th e rap id . R . C. B en n er.................................................................................. 348D ete rm in atio n of cocain a n d stry chn in , an d a tro p in and s try chn in

w hen th e y occur to ge ther, separa tio n and . H . C. F u lle r ....................... 378D etectio n of capsicum , capsa ic in , th e p u n g en t p rinc ip le o f capsicum ,

and the. E . K . N elson ..................................................................................... 419D ete rm in atio n of po tassium b y th e c ob a lti-n itrite m ethod , volum etric .

O. M. S h ed d ............................................................................................................ 379D ete rm in atio n o f free acid in hydrogen perox ide so lu tions, th e . L in-

wood A. B row n ...................................................................................................... 377D ete rm in atio n of zinc in ores, th e electro ly tic . Geo. K c m m e re r .. . . 375D ete rm in atio n of copper in b lis te r an d refined copper. W illiam C.

F erg u so n ................................................................................................................... 187D ete rm in atio n of m oistu re b y d istilla tion , the. Sam uel S. S ad tler

(N o te )........................................................................................................................ 66D eterm in atio n of sodium chloride in m ilk. P au l P o e ts c h k e .................. 210D eterm ine fusel oil in d istilled liquors, to . I I . P . B a sse tt........................ 389D ete rm in atio n of h urnus. th e . F . J . A lw ay, E . K . F iles an d R . M.

P inck ney ........................................................................................... 317D ete rm ination of c rude fiber. G . M. M acN ider............................................ 281D ete rm in atio n o f su lp h ur in b rass a n d bronze. G ustav T h u r n a u e r . . 293 D eterm in ing th e m elting po in ts o f fa t, im provem en t o f th e W iley

m eth od for. H a rry S tecnbock (N o te )....................................................... 480D eve lopm en t o f chem ical in d u s try in C anada, th e (A bs.). Ju d so n

A. D eCew ........................................................................... 364D ex trose , th e n orm al w eight of. C. A. B row ne.............................................. 526D ifferen tial condensation in d istilla tion an d rec tifica tion of b inary

liqu id m ix tu res. A lcan H irscli...................................................................... 409D issolving chem icals and ag ita tin g so lu tions, som e p roblem s in th e m an ­

u fac tu re an d ag ita tio n of su lph ide solu tions. O skar N agel,P h .D .................. 341

D istilla tio n , de te rm in atio n o f m oistu re b y . S am uel S. S ad tle r (N ote) 66 D istilla tion an d rec tifica tion of b in a ry liqu id m ix tu res, d ifferential

condensation in. A lcan H irsch ................ 409D is tilla tion of w hiskey, th e . A. B . A dam s....................................................... 34D istilled liquors, to determ ine fusel oil in . H . P . B a sse tt........................ 389D ivision o f ag ricu ltu ra l and food chem ists, A m erican Chem ical Society,

B oston m ee ting ............................................................................................. 72, 429D ivision of In d u s tr ia l C hem ists an d Chem ical E ng ineers. . 108, 222, 229, 361 D ivision of F ertilize r Chem ists, A m erican Chem ical Society , B oston

m ee tin g ..................................................................................................................... 70D ivision of P h a rm aceu tica l Chem ists, A m erican C hem ical S o c ie ty .. . . 429 D reh sch m id t’s m ethods for determ in ing su lp h u r in illum inating gas,

a com parison of B olling’s, H ard in g ’s. E . P . H ard ing a n d CarlT a y lo r ........................................................................................................................ 385

D ried b an a n a s in E urope (N o te )............................................................................... 494D ross in an e lec tric furnace , red u c tio n of tin . R . S. W ile ( N o te ) , 544D ry farm ing , a c o n trib u tio n to o u r know ledge o f th e n itrogen problem

under. F . J . A lw ay and R . S. T ru m b u ll.................................................. 135D ry ing oven, a conven ient. M. M. M acLean (N o te ) .............................480D ry -lan d farm ing , th e n itrogen an d h um u s p rob lem in. R o b e rt

S te w a r t......................................................................................................... 386D ust, exp losib ility of coal, B ureau o f M ines (N o te ) ...................................... 427D u s t p rev en tiv es and ro ad b inders . P rev o st H u b b a rd (B ook) 295D yeing lea th er. F . E . A tte a u x .............................................................................. 218E d i t o r i a l s .............................................. 1 , 33. 77. 237. 3 7 1, 397, +51. 497Effect of gypsum o f alkali in soils. W . F . S u th e rs t ...................................... 329

E ffect o f lim e u po n th e so lu b ility of soil con stitu en ts . F . W . G aith er 315 E ffect of v a ry in g am o u n ts o f litha rge in th e fire assay for silver, the.

K en n eth W illiam s................................................................................................ 406Efficiency in th e e lec tro ly tic p roduction of m etallic calcium . F ran c is

C. F ra ry , H en ry R . B icknell and C arl A. T ro n son ................................... 522Efflorescence on b rick w ork. A. F . G reaves-W alker................................... 373E in landung Z ur 26, Jah resv ersam m lu ng des D eutscli-A m erikanischen

T echnikcr-V erbandes.......................................................................................... 392E lec trica l con d u ctiv ity , c a s t copper of h igh. D r. E . W ein trau b

(A d d .)...........................................................................................................................477E lec tric furnace , red u c tio n of tin d ross in an . R . S. W ile ( N o te ) . . . . 544 E lec tric v acu u m furnace in sta lla tio ns in th e research labo ra to ry of

th e G eneral E lec tric C om pany. W . C. A rsem ....................................... 3E lec tro ly tic decom position o f so lu tions. C lin ton P . T ow nsend ( P . ) . . . . 555 E lec tro ly tic de te rm in atio n of copper in ores, a ra p id m eth od fo r the.

R . C. B en n er........................................................................................................... 195E lec tro ly tic d e te rm in a tio n of zinc in ores, th e . Geo. K e m m e r c r . . . . 375 E lec tro ly tic p rep a ra tio n of calcium , th e . A rden R . Jo hn son ( A d d .) . . 466 E lec tio ly tic p ro duction of m etallic calcium , efficiency in the. F rancis

C. F ra ry , H en ry R . B icknell and C arl A. T ro n so n ................................ 522E le c tro s ta tic sep ara tio n to ore dressing, app lica tion of. F . S. M ac­

G regor..................................................................................................... 517E lectro lysis w ith s ta tio n a ry electrodes, th e ra p id dete rm in atio n of

lead in o res b y . R . C. B enner........................................................................ 348E lec tric com bustion furnace , lab o ra to ry trea tin g fu rnace an d rh eo s ta t.

G eorge M. B erry ..................................................................................................... 255E lem en ts an d special com pounds, uses for ra re . G ellert A lle m a n .. . 237E ngineering C hem istry. T hom as B . S tillm an (B ook)..................................... 391E ngineering education , chem ical (E d .) ................................................................ 397E ng lish slag pav ing b locks (N o te ) . ...................................................................... 495E n tra in m e n t from evap ora to rs , th e determ in atio n of sugar lo st by .

R . S. N o rris .............................................................................................................. 401E th e r e x tra c t of spices, influence of th e m eth od of hea ting on th e non ­

vola tile . A rth u r Low cnstein and W m . P . D u n n e ................................... 47E th e r sep ara tio n , th e de te rm in atio n of phosphorus re ta in e d w ith ferric

chloride in th e . R . J . W y so r...................................................... 45E v ap o ra to rs , th e d e te rm in atio n of sugar lo st b y e n tra in m en t from .

R . S. N orris ............................................................................................................. 401E x a c t d e te rm in atio n of su lp h u r in p y rite and m arcasite . E . T . A llen

an d Jo h n J o h n s to n . ......................................................................................... 196E xam in a tio n of Candelilla w ax. R . F . H are and A. P . B je r re g a a rd .. 203- E xam in a tio n of foods for salicylic acid , a sourcc of erro r in th e . I I . C.

S he rm an ....................................................................................................... 24E xam in a tio n of some Chinese te a soils, th e chem ical and in ineralogical.

W . O. R obinson a n d W . J . M cC aughey...................................................... 462E xp e rim en ts to th e ac tiv e phosphoric acid o f th e soil, re la tio n o f p o t.

G . S. F ra p s ............................................................... 350E xplosion te s ts on m ix tu res of carbon te trach lo rid e an d n ap h th a ,

flash, fire and . E dw . A. B a rr ie r ................................................................... 16E xp losib ility of coal d u s t. B ureau of M ines (N o te ) ........................................ 427E x tra c tio n ap p a ra tu s , an. S am uel M. B a in ..................................................... 455E x tra c tio n , no te on a condenser u sed for. D av id B lo o m ..................... 103

F A R M IN G , th e n itrogen a n d h um u s prob lem in d ry -land . R o b e rtS te w a r t................................................................................................................ 386

F a t and ' calcium in cream , re la tion betw een . H erm an C. L ytligoe an dC larence M arsh .........................................................................................................327

F a t fo r t i t re dete rm in atio n , rap id saponification of. Chas. V. Zoul(N o te )........................................................................................................................ 479

F a ts , im p ro vem en t of th e W iley m eth od for determ in ing th e m eltingp o in ts of. H a rry S teenbock (N o te )...............................................................480

F eeds u po n th e p ropertie s of la rd , som e effects of. C. L . H a re ....................264F erric chlo ride in th e e th e r sep ara tio n , de te rm in atio n of phosphorus

re ta in e d w ith . R . J . W y so r ........................................................................... 45F erro -titan iu m in Bessem er rails, th e u se of. P . I I . D u d ley ....................299F ertilize r legislation o f th e D ivision of F ertilize r C hem ists o f th e

A m erican Chem ical S ociety , re p o r t of th e com m ittee o n .................... 71F ertilize r sam ples, accu racy in tak in g and p rep arin g m ixed. F . B.

P o r te r ......................................................................... 148Fertilize rs, bacterio log ical m eth od s for determ in ing availab le n itrogen

in. Jaco b G. L ip m a n ........................................................................................ 146F iltra tio n of sm elter sm oke, th e neu tra liza tio n and . W . C. E b a u g h .. 372 F ire a n d explosion te s ts on m ix tu res o f carbon te trach lo rid e an d n ap h ­

th a , flash. E dw . A. B a rr ie r ........................................................................... 16F ish oils in vege tab le oils, th e d etec tion of. O tto E isenschim i and

H . N . C op thorne ................................................................................................... 43F lash , fire an d explosion te s ts on m ix tu res of carbon te trach lo rid e

and n ap h th a . E dw . A. B a rr ie r ..................................................................... 16F lesh , phosphorus in . P . F . T row bridge a n d Louise S tan ley . . . . . ____212F ood Insp ectio n a n d A nalysis. A lb e rt E . L each (B o o k )............................ 29Form aldehyde in sugar cane ju ice and sugar house p ro d u cts . P . A.

Y oder a n d W . G. T a g g a r t ................................................................................. 260F o rm atio n of carbenes. B asil W . A lex an d er.................................................. 242F ree a d d in hydrogen peroxide solu tions, th e d e te rm in atio n of. L in-

wood A . B ro w n ...................................................................................................... 377

SUBJECT INDEX. 571F ue l and R cfrac to ry M aterials. A. H u m b o ld t S ex ton (B o o k ) 428F ungus D iseases of P lan ts . B en j. M. D uggar (B o o k )............................... 294F u rn ace an d rhe o s ta t, e lectric com bustion furnace , lab o ra to ry testing .

Geo. M. B e rry ............................................; .............................................................255F urn ace in sta lla tio ns in th e research lab o ra to ry of th e G eneral E lec tric

Com pany, electric v acuum . W . C. A rsem ................................................ 3F u rn ace , red u c tio n of tin dross in an electric. R . S. W ile (N o te ). . . . 544 F u r th e r s tud ies of reac tio n s of lim e-sulfur so lu tion a n d alkali w ate rs on

lead a rsenates. C. E . B rad ley an d H . V. T a r ta r ....................................328F use l oil in d istilled liquors, to determ ine. H . P . B a s s e tt .......................... 3S9

G a m b o g e , f . o . T ay lo r..................................................................................... 208G as, a com parison of th e efficiency of O tto Peiffcr’s an d D ennis & Mc­

C arth y ’s m eth od for determ in ing benzene in illum inating . E . P.H ard ing a n d C arl T ay lo r ................................................................................... 345

G as, a com parison of B olling’s an d D reh sch m id t’s m ethods for d e te r ­m in ing su lfu r in illum inating . E . P . H ard ing a n d Carl T a y lo r . . 385

G as calorim eter, a new. S. W . P a r r ...................................................................... 337G as b y iodine p cn tox ide . th e d ete rm ination o f carbonic oxide in illum i­

n atin g . A. H . G ill a n d E . H . B a r t le t t ....................................................... 9G erm an y 's po tash deposits a n d m ines (N o te ) ................................................. 562G erm an po tash prices (N o te )................................................................................... 441G erm an resin ite com pound (N o te ) ......................... 441G lycerine analysis, sub-com m ittee on, rep o rt o f m eeting a t B oston . . . . 222 G lycerine, th e coefficient of expansion in. A rth u r M. Comey a n d Cecil

F . B ack us ............................................................................................................. 11G lycogen co n ten t of b eef flesh. P . F . T row bridge a n d C. K . F rancis 21 ,215 G old, crucible assay of p y ritic con cen tra tes for silver and . Geo.

B orro w m an ............................................................................................................. 251G ooch in p a in t analysis, a use for th e . W arren I . K ee le r .......................... 388G rapes, th e occurrence of sucrose in . W m . B . A hvood (N o te ) 481G rap h ite anode, a ro ta tin g . J . W . T u r re n tin e ..................................................342G re a t S a lt L ake, com p ara tiv e analyses of w ater from . W . C. E bau g h

an d W allace M acF arlane ................................................................................... 454G uayule ru b b e r su pp ly in Mexico (N o te ) ............................................................. 494G ypsum on a lkali in soils, effect of. W . F . S u th c rs t .................................... 329G ypsum on som e O regon soils, th e reac tio n o f lim e an d . C. E . B rad ley 529H A N D B U C H dcr Cliemie u n d Technologic dcr Oele u n d F e ttc . L.

U bbelohde an d F . G oldschm id t (B o o k )...................................................... 549H ard in g ’s an d D rehschm id t’s m ethods for determ in ing su lp h u r in illum i­

n a tin g gas, a com parison of B olling’s. E . P . H ard ing and C arl T ay ­lo r ...................................................................................................................................385

H e a t tre a tm e n t of high-speed tools. C. P . B erg ............................................ 510H igh e lectrical con d u ctiv ity , c a s t copper of. D r. E . W e in tra u b (Add.) 477H igh-speed tools, h e a t tre a tm e n t of. C. P . B erg ........................................ 510H igh-vo ltage pow er for N iag ara (N o te )..................................... #...........................494H um u s, d e te rm in atio n of. F . J . A lw ay, E . K . F iles an d R . M. P inck ­

n e y . . . . . . . ............................................................................................................... 317H u m u s prob lem s in d ry -lan d farm ing, th e n itrogen an d . R o b e rt

S te w a r t ..................................................................................................................... 386H ydrogen peroxide so lu tions, th e dete rm in atio n of free acid in . L in-

w ood A. B row n .................................................... ................................................ 377H ygien ic L ab o ra to ry — B ulle tin N o. 58. M urray G. M otter a n d M artin

L . W ilb ert (B ook).......................................... 221H ygiene of th e sm all chem ical lab o ra to ry . E dw ard K elle r...................246ID E N T IF IC A T IO N te s t for caram el. G. I I . p . L ic h th a rd t ..................... 389I llu m in a tin g gas, a com parison o f B olling’s, H ard in g ’s a n d D reh ­

sch m id t’s m ethods for determ in ing su lfu r in. E . P . H ard ing andCarl T a y lo r ........................................................................................................... 385

Illu m in a tin g gas, a com parison o f th e efficiency of O tto Pfeiffer’s and D ennis an d M cC arthy’s m eth od for determ in ing benzene in. E . P .H ard ing and Carl T ay lo r .........................................................................345

Illu m in a tin g gas b y iodine pen toxide , th e determ in atio n of carbonicoxide in . A. H . G ill and E . H . B a r t le t t ................................................... 9

Im m isc ib le so lvents, th e use of. R oe E . R em ing ton (N o te ) ................. 546Im p erfec t pav in g bricks, some. Jam es C. L aw rence a n d C harles J .

B oner............................................................................................................................524Im p o rta tio n of tu ng sten from th e P lau en D is tric t (N o te ) ........................ 443Im p rov ed oven for h igh tem p era tu re s , an . H . W . C lark a n d G. O.

A dam s....................................................................................................................... 220Im p rov em en t of ana ly tica l processes, the. W . D. R ichardson (A dd.) 99 Im p ro v em en t o f th e W iley m ethod for determ in ing th e m elting p o in ts

o f fats . H arry S teenbock (N o te ) ................................................................ 480In d u s tr ia l C hem ists and Chem ical E ngineers, A m erican Chemical

S ociety , D ivision of. B oston m ee tin g .......................................................... 67In d u s tr ia l an d trad e n o te s .............................159, 235, 336, 369, 441, 493, 558In d u s tr ia l investiga tions a t low tem p era tu res, a convenient m ethod of

refrige ra tio n for ana ly tica l and . Jam es O. H a n d y .............................. 92In d u s tr ia l labo rato ries , th e lib ra ry as an a d ju n c t to . G uy E . M arion 83In d u s try , th e borax . F . M. D u p o n t............................................ 500In d u s try , trad e school for th e leather. A llen R ogers (A d d .) ......................474In d u s try , th e app lica tion of science to (E d .) ......................................................498Influence of th e m ethod o f h ea ting o n th e non-volatile e the r e x tra c t

of spices. A rth u r Low enstein a n d W m . P . D u n n e ............................... 47

Influence of m icro-organism s u pon th e q u a lity o f m ap le sy rup . H .A. E d so n .................................................................................................................. 325

In te rn a tio n a l Congress o f A pplied C hem istry , 1912, e ig h th . . . . . . . 105, 554In te rn a tio n a l Congress o f A lim en ta ry H ygiene and o f th e R a tio na l

F eeding o f M an ..................................................................................................... 106Inv e rta se , th e q u a n tita tiv e determ in atio n of cane sugar b y th e use

of. C. S. H u d so n ............................... 143Iod in e p en tox ide , th e de te rm in atio n of carbonic oxide in illum inating

gas b y. A. II . Gill and E . H . B a r t le t t ........................................................ 9Iro n electroly.tically, com parison o f m ethods for depositing . S. A.

T ucker and E . S ch ram m ................................................................................... 237Isom alto l, n o te on D r. B acke’s investiga tion of m alto l and . H . C. Sher­

m an ............................................................................................................................ 426

J A P A N E S E p ap e r m ill, new (N o te )......................................................... 493Jelly -m ak ing , c o n tribu tion on. N . C. G o ld th w a ite .........................................457Jo u rn a l b rasses, th e analysis o f b a b b i tt m eta ls, solders and . D. J .

D cm orest................. : .............................................................................................. 80

K .A F IR corn , th e chem ical com position of. R . O. B a ird and C. K .F ran c is ...................................................................................................................... 531

K je ld ah l m ethod , n o te o n th e dete rm in atio n of n itrogen b y th e . P . L.H ib b a rd ....................................................................................................................... 463

L A B O R A T O R Y m ethods for o rganic n itrogen availab ility . C. II.Jo n e s .................................................................................................................. 308, 546

L ab o ra to ry te s ts of lu b rican ts— in te rp re ta tio n of analyses. P . I I .C onradson ................................................................................................................ 171

L ab o ra to ry , th e w orks (E d .) ..................................................... 371L ake , com p ara tiv e analyses of w ate r from G re a t S alt. W . C. E baugh

and W allace M acF arlane ................................................................................... 454L ard , some effects of feeds upon th e p ro p erties of. C. L. H a r e 264L aW all m eth od for th e dete rm in atio n of sodium ben zoa te in catsups,

th e modified. W . D. M cAbee (N o te ).........................................................544L ead arsenates, fu r th e r s tud ies o f reac tions o f lim e-sulfur so lu tion and

alkali w ate rs on. C. E . B rad ley and H . V. T a r ta r ................................. 328L ead in o res b y e lectro lysis w ith s ta tio n a ry electrodes, th e rap id

d ete rm in atio n of. R . C. B enner................................................................... 348L ea ther, dyeing. F . E . A tte a u x ............................................................................ 218L ea th e r in d u stry , an o u tline of the. A llen R ogers........................................ 353L ea th e r in d u s try , trad e school for the. A llen R ogers (A d d .) ......................474Legum es, a v a ilab ility o f soil n itro g en in re la tion to th e b as ic ity of

th e soil a n d to th e g row th of. T . L. L yon an d Jas . A. B iz z e ll .. . . 313L eng th of a techn ica l p aper, th e . A lbert E . Leach (E d .) ........................... 2L eng th o f a techn ica l p ap er. W ilson H . L ow ................................................. 221L ength o f a techn ical pap er, the. J . W . T u rre n tin e .................... 157L eng th of techn ica l papers. R . C. B en n er.........................................................331L es Secheries Agricoles: E tu d e E conom iquc e t T echnique de la D esicca­

tion des P rod u cts Agricolcs. D. S idersky (B o o k )................................. 360L ib ra ry as an a d ju n c t to in du stria l labo rato ries , th e . G uy E . M ario n . 83L iebcrm ann sto rch reaction , possible con tam in atio n o f ace tic an h y ­

d ride used in th e . Chas. S. P a lm er.......................................................... 104Lim e and gypsum on some Oregon soils, th e reac tio n of. C. E . B rad ley . 529 L im ed a n d u n lim cd land , after-effects of ce rta in pho sp ha tes on. H .

J . W heeler................................................................................................................ 133L im e-su lfu r so lu tion and alkali w a te rs on lead a rsenates, fu r th er s tud ies

of reac tio n s of. C. E . B rad ley an d H . V. T a r t a r ................................. 328L im e-su lfur sp ray , com position of. H . V. T a r ta r and C. E . B ra d le y .. 271L im e u pon th e so lub ility o f soil c on stitu en ts , effect of. F . W . G aith er. 315L im e u sed in cyan ide w ork, ra p id e stim atio n o f ava ilab le calcium

oxide in. L . W . B ah n ey ................................................................................... 407L iqu id am m onia, m ethods for te stin g com m ercial, anhydrous. W . D.

R ich a rd so n .............................................................................................................. 97L iq u id m ix tu res, d ifferen tial condensation in d is tilla tion a n d retifica-

tion o f b ina ry . A lcan H irsc li......................................................................... 409L iquors, to dete rm ine fused oil in d istilled . I I . P . B a s s e tt ........................ 389L ith a rg e in th e fire assay fo r silver, th e effect o f v a ry ing am o u n ts of.

K en n e th W illiam s................................................................................................ 406L ub rica ting oils, th e action of su n lig h t and a ir u pon some. C. E .

W a te rs ....................................................................................................................... 451L ub rican ts— in te rp re ta tio n s o f analyses, lab o ra to ry te sts of. P . H .

C onradson ................................................................................................................ 171Losses in th e s to rage of coal. H orace C. P o rte r a n d F . K . O v itz . . . . 77L ub rica tion and lu b rican ts . C harles F . M ab e ry ............................................. 115L ub rican ts , lu b rica tio n an d . C harles F . M ab ery ........................... 115M A L T O L an d isom alto l, n o te on D r. B acke’s investiga tion of. H . C.

S h e rm an .................................................................................................................... 426M anufacture and in d u s tria l app lica tion s o f ozone, th e . D r. O scar

L inder (A bs.).......................................................................................................... 365M aple sy ru p , influence of m icro-organism s u po n th e q u a lity of. I I . A.

E d so n ........................................................................................................................ 325M arcasite, e x a c t d e te rm in atio n of su lp h u r in p y rite and . E . T .

A llen a n d Jo h n J o h n s to n .................................................................................. 196M achine fo r sm all sam ples of w heat, a m illing. Geo. A. O lso n 527M aking sam ple alloys. R- C. B enner (N o te ) ................ 546

572 TH E JOURNAL OF IN D U STR IA L A N D ENGINEERING CHEMISTRY. Dec., 1910

M anufactu re o f P ap er, T he. R . W . S indall (B o o k ) ............................. 104M eans for recovering b y -p roducts . P u lask i M. H am lin (P .) .......................366M edicinal p laste rs , assay of. F rederick B . K ilm er..................................... . 94M edicinal sy n th etic s , recen t p rogress am ong. V, C ob len tz ........................... 352M elting po in ts o f fa ts , im p rovem en t of th e W iley m eth od for de te rm in ­

ing th e . H a rry S teenbock (N o te )................................................................ 480M ercury sa lts of th e pharm acopoeia , d e te rm in atio n of m ercu ry in

th e . B . L . M urray (N o te ) ..................................................................................481M etallic calcium , efficiency in th e e lec tro ly tic p ro d u ctio n of. F ran c is

C. F ra ry . H en ry R . B icknell a n d C arl A. T ro n so n ....................................522M etallography. C. H . D csch (B ook)...................................................................... 390M etallurgical furnace. Jo h n E . Jones (P .) ...................... 439M ethod, n o te on th e dete rm in atio n of n itrogen b y th e K je ldah l. P . L.

H ib b a rd .......................................................................................................................463M ethod for calo rim etric de te rm in atio ns o n a n th rac ite coal, a n accu ra te .

O scar W . P a lm e n b e rg ....................................................................................... 404M ethods for depositing iron elec tro ly tica lly . com parison of the. S. A.

T ucker an d E . S ch ram m ............................................ : .............. 237M ethod for determ in ing th e m elting po in ts of fa ts , im provem en t o f th e

W iley. H arry S teenbock (N o te ).................................................................. 480M ethods for te stin g com m ercial anhydrous, liqu id am m onia. W . D.

R ich a rd son ....................................................................................................... 97M ethod for m ak ing silicon carbide. F ran k J . T one ( P .) .......................... 394M ethod for th e de te rm in atio n of sodium ben zoa te in ca tsu ps, th e

m odified L aW all. W . D . M cAbee (N o te ) ............................................... 544M ethod of, and a p p a ra tu s for, p roducing coa ted m eta l objec ts. Jo h n

F . M onnot ( P ) ................................................................... 557M ethods o f a sp h a lt exam ination . A lb ert S om m er...................................... 181M ethod of ex trac tin g o r e lim inating su ltu r, phosphorus an d o ther

im puritie s from coal ore. L eland L . Sum m ers ( P .) .......................... 438M ethod of hea ting on th e non-vola tile e the r e x tra c t o f spices, influence

of th e . A rth u r Low enstein and W in . P . D u n n e ...................................... 47M ethod of m an u fac tu re o f b ica rbo n ate o f soda. R o b e rt H ugh F orsy the

F in lay (P .) .............................................................................................................. 368M ethod of recovering am m onia from coal-gases an d th e like. J a n

A dolf Roelofsen (P .) ................................. 490M ethods for determ in ing su lphur in illum ina ting gas, a com parison of

B olling’s, H ard ing 's an d D rehschm id t’s. E . P . H ard ing andCarl T ay lo r.............................................................................................................. 385

M ethods for organ ic n itrogen availab ility , labo ra to ry , C. H . Jones(N o te ) ........................................................................................................ 546

M ethod, vo lum etric determ in atio n of po tassium b y th e cob alti-n itrite .O. M. S h cd d ............................................................................................................ 379

M exican cem ent p la n t (N o te )...................................................... 561M icro-organism s u pon the q u a lity of m aple sy rup , influence of. H .

A. E d so n ...................................................................................................325M ilk, determ in atio n of sodium chloride in. P au l P o e tsch k e ................. 210Mill, new Jap an ese p ap e r (N o te ) ...........................................................................493M illing m achine for sm all sam ples of w heat, a. Geo. A. O ls o n .. 527Milling o f cane in sugar m an u fac ture con tro l a p p a ra tu s . G. L . Spencer. 253 M ineralogical exam in a tio n of som e Chinese tea soils, th e chem ical and .

W . O. R ob inson and W . J . M cC aughey...................................................... 462M ine rescue service (N o te ) ........................................................................................ 561M ixed fertilizer sam ples, accu racy in tak in g a n d p reparing . F . B.

P o r te r ........................................................................................................................ 148M ixtures, d ifferen tial condensation in d is tilla tion and rectification

o f.b in a ry liquid . A lcan H irsch ..................................................................... 409M odified L aW all m eth od for th e dete rm in atio n of sodium benzoate

in ca tsu ps, th e . W . D . M cAbee (N o te ) ................................................. 544Modified S oxhlet a p p a ra tu s . V . E . H en d erso n ................................................ 219M oisture b y d istilla tio n , d ete rm ination of. Sam uel S . S ad tler (N o te ) . 66M oisture d e te rm in atio n as app lied to cereals, the. S herm an L e a v i t t . . . 19M oisture in v iscous p ro d u cts , no te on. A rth u r L ow enste in ....................... 330M onazite an d zircon production (N o te )............................................................... 559N A P H T H A , flash, fire an d explosion te sts on m ix tu res of carbon

te trach lo rid e and . E dw . A. B a rr ie r ............................................................ 16N eu tra liza tio n and filtra tion of sm elter sm oke, the. W . C. E b a u g h .. 372New alloy, a (N o te ).........................................................................................................494N ew an d Non-Official R em edies 1910, A m erican M edical Associa­

tion (B o o k )............................................................................................................. 221N ew gas calo rim eter, a. S. W . P a r r . ................................................................ 337New Jap an ese p ap er m ill (N o te )............................................................................... 493New p ro d u c t fo r u se in th e a rts , a . D r. F . G. W iechm ann (A b s.) . . . . 363New s tep in in du stria l education , a. A llen R o g e rs ................................... 25New Y ork chem ists’ build ing, th e (E d .) ................................................ ............. 1N ickel and co b a lt w ith chrom ium , alloys of. E lw ood H ay n es 397N itric acid. Schuyler F raz ier (A b s.)....................................................................365N itrogen and carbon in th e v irg in an d fallow ed soils of E as te rn O regon

C. E . B rad ley ......................................................................................................... 138N itrogen a n d h um u s prob lem in d ry -lan d farm ing , the. R o b e rt

S t e w a r t . . . ............................................................................................................... 386N itrogen availab ility , labo ra to ry m ethods for organic. C. H . J o n e s . .

.............................................................................................................................308, 546N itrogen b y th e K je ld ah l m ethod , no te on th e d ete rm ination of. P .

L . H ib b a rd .............................................. 463

N itrogen , cost o f availab le . E d w ard B . V oorhees........................................ 153N itrogen in fertilizers, bacterio log ical m ethods for d e te rm in ing avail­

able. J aco b G. L ip m a n .................................................................................... 146N itrogen p rob lem u n d e r d ry farm ing , a c o n tribu tion to o u r know ledge

of the. F . J . A lw ay an d R . S . T ru m b u ll ................................................ 135N on-sugar o f th e sugar b ee t, op tica lly active. W . H . R ee s ...........................323N ote on a condenser used for ex trac tio n . D av id B lo o m .......................... 103N ote on m oistu re in v iscous p ro d u cts . A rth u r L ow enste in ......................330N ote on th e recovery o f w aste p la tin u m . A . W . B la ir ............................ 102N ote 011 th e d e te rm in atio n of n itrogen b y th e K je ld ah l m ethod . P .

L . H ib b a rd .............................................................................................................. 463N otice, to m em bers of D ivision of In d u s tr ia l C hem ists a n d Chem ical

E ng ineers .................................................................................................................. 107N orm al w eigh t of dex trose , th e . C. A. B ro w ne .......................................... 526N ote on D r. B acke’s investiga tion of m alto l a n d isom alto l. H . C.

S h e rm a n ............................* ..................................................................................... 426N otes an d corresp o nd en ce ........................ 27, 66, 102, 157, 219, 293,

..................................................................... 330, 359, 388, 426, 478, 543O b i t u a r y . ........................................................................................................... 449O bta in ing pe tro leum p roducts . H erm an F ra sc h ............................................. 439O ccurrence of form aldehyde in su gar cane ju ice and sugar house p ro d ­

ucts . P . A . Y oder a n d W . G. T a g g a r t .......................................................260O ccurrence of sucrose in g rapes, the. W in , B . A lw ood (N o te ) ................. 481Official m eth od for de te rm in atio n of vo la tile m a tte r in coal, some

v aria tio n in. A. C. F id d lie r an d J . D. D av is ........................................ 304O ffidal reg u lations an d ru lin g s ........................112, 164, 235, 396, 443, 495, 563Oil in d istilled liquors, to determ ine fusel. H . P . B a s s e tt .............................389Oils and F a ts , A llen’s C om m ercial O rganic A nalysis (B o o k )......................390Oil te ste r, th e S co tt (N o te ).......................................................................................... 482Oils, th e ac tio n of su n lig h t an d a ir u pon som e lubricating . C. E .

W a te rs ..........................................................................................................................451O ptical a c tiv e non-sugar of th e su gar b ee t. W . H . R ee s .............................323O re dressing, app lica tion of e lec tro sta tic sep ara tio n to . F . S. M ac­

G regor....................................................................................................................... 517O res, a rap id m eth od for th e e lec tro ly tic d e te rm in atio n of copper in.

R . C. B en n er........................................................................................................... 195Ores, th e e lec tro ly tic de te rm in atio n of zinc in . Geo. K e m m e r e r . . . . 375 O res b y e lectro lysis w ith s ta tio n a ry electrodes, th e ra p id d e te rm in a ­

tion o f lead in. R . C. B enner......................................... 348O regon soils, th e reac tio n of lim e an d gypsum on some. C. E . B rad ley . 529 O rganic n itrogen a va ilab ility , lab o ra to ry m ethods for. C. I I . Jones

( N o t e ) . . . . . ............................................................................................................. 546O rganization (E d .) .................................................. 33O rig inal p a p e rs 3, 34. 77, 115, 171, 237, 299, 337, 372, 397, 451 500O utline of th e lea th er in d u stry , an . A llen R og e rs ........................................ 353O ven, a conven ient d ry ing. M. M. M acLean (N o te ) ...................................... 480O ven for h igh te m p era tu re s , a n im proved . H . W . C lark and G. O.

A dam s.......................... 220O xide of lim e used in cyan ide w ork, ra p id estim atio n of availab le

calcium . L. W . B alin ey ................................................................................... 407Ozone w ith reference to a ir purifica tion , p re sen t s ta tu s of. R alp h D.

Sm all (A d d .)........................................................................................................... 534P A C IF IC N orthw est, conservation a n d u tiliza tio n in the. I I . K .

B enson ....................................................................................................................... 100•P a in t analysis, chrom e. E . F . Sclierubel and E . S. W ood ( N o te ) . . . . 482P a in t analysis , a use for th e G ooch. W arren I . K ee le r.............................388P a in t, scientific p re p a ra tio n an d app lica tion of. G. W . T h o m p s o n .. . 87P ap er m ill, new Jap an ese (N o te ) . ........................................................I . . 493P ap rik a , S pan ish . A rth u r L ow enstein an d W . P . D u n n e .......................... 139P av ing blocks. English slag (N o te ) .................................................................. 495P av in g b ricks, som e im perfect. Jam es C. L aw rence a n d C harles J .

B o n e r......................................................................................................................... 524P erco la tion . F ran k M. D avis (N o te )................................................................... 102P erox ide so lu tions, th e d e te rm in atio n of free a d d in hyd rogen . L in-

wood A. B row n ...................................................................................................... 377P ersonal n o te s ......................................................................................................... 487, 554P etro leu m oil gusher (N o te ) ...................................................................................... 559P h a rm aceu tica l C hem ists, A m erican C hem ical S o d e ty , D ivision of,

B oston m ee ting ...................................................................................................... 73P harn iacop o c ia , de te rm in atio n of m ercury in th e m ercu ry sa lts of the.

B . I.. M urray (N o te )....................................................................................... 481P ho sp ha te developm ents in O ceania (N o te ) ...................................................... 493P ho sp ha te rock , un ifo rm a n a ly tica l m ethods for. C. F . H a g e d o r n . . . 158P h o sp ha tes, a v a ilab ility of soil. W . P . K e lle y ....................... 277P h o sp h a te s on lim ed a n d unlim ed land , after-effects o f certa in . H .

J . W heele r................................................................................................................ 133P hosphoric a d d b y th e o ffidal vo lu m etric m ethod , d e te rm in a tio n of.

F . B. C arp en te r ........................................................................................... 157P hosphoric acid of th e soil, re la tio n of p o t experim ents to th e active.

G. S. F ra p s .......................................................... 350P ho sp ho ru s in flesh. P . F . T row bridge a n d Louise S ta n le y ........................ 212P hosphorus re ta in e d w ith ferric chloride in th e e th e r sep ara tio n , d e te r­

m ination of. R . J . W y so r.................. 45P h o to g rap h y (E d .) ......................... ............................................................................. 451

SUBJECT INDEX. 573P la n t a n d m ach in ery ............................................................................................283, 537P la n t design. W . M. G rosvenor (A bs.) ..............................................................365P la tin u m , n o te o n th e reco v ery of w aste . A . W . B la ir ............................ 102P la tin u m , th e q u a lity o f (E d .) ................................................................................. 497P o ly techn ic E ng ineer, T he (B ook)......................................................................... 391Possib le con tam in atio n o f ace tic anhydride used in th e L ieberm ann-

Storcli reac tio n . Chas. S. P a lm er................................................................ 104P o ta sh b u lb for carb o n b y com bustion . N . A. K oenig (N o te ) 66P o ta sh deposits a n d m ines. G erm an y ’s (N o te ) ............................................ 562P o ta sh sa lts in G alicia (N o te ) ...................................................................... 558P otasli s tarch in G erm any (N o te ) .............................................................443P o ta sh w ork, fertilizer d ivision A. C. S ., D ecem ber, 1909.......................... 108P otassiu m b y th e c ob a lti-n itritc m ethod , v o lum etric determ in atio n of.

O. M. S h ed d ................. ................................................. . ..................................... 379P otassium sa lts , th e p rice of (E d .) ...................................................................... 497P ow dered sugar cane (N o te ) ....................................................................... . . . . . . . 558Pow er for N iagara , h igh-vo ltage (N o te ) .............................................................. 494P rep a ra tio n an d app lica tion of p a in t, scientific. G. W . T h o m p so n . . . 87Problem s, w ate r. W illiam M. B oo th ....................................................... .. 503P rep a ra tio n o f cu rd from b u tte rm ilk , the. J . L. S am m is ........................ 142P rese n t s ta tu s o f ozone w ith reference to a ir purification . R a lp h D.

Sm all (A d d .).......................................................................................................... 534P rod u ctio n of fine-m etal tu ng sten . E lih u T hom son (P .) .......................... 365P rod u ctio n of m eta llic calcium , cfiidcncy in th e e lec tro ly tic . F rancis

. C. F ra ry , H en ry R . B icknell and C arl A. T ro n so n .............................. 522P rice of po tassium salts, th e (E d .) ................................. .......................................497P rob lem s in chem ical in d u stry . Jo h n T . B aker (A bs.).............................. 363Prob lem in d ry -lan d farm ing , th e n itrogen a n d hum us. R o b e rt

S te w a r t.................................................................................*................... 386P rocess for c leaning iron ores. E dw ard F . G o ltra (P .) ............................ 367Process for ex trac tin g or sep ara tin g precious v alu es from ores. Jan ies

S. Is la n d (P .) ......................................................................................................... 395P rocess fo r m ak ing con cen tra ted sulfuric acid. O tto P rolls ( P . ) . . . . 393 P rocess for m an u fac tu rin g carbonic acid . E rn s t A ug u st B ehrens

(P ) ............................................................................................................................... 368Process of m ak ing n itr ic acid. F riedrich H au sser (P .) .............................367Process for p roducing a lloy and th e separa tio n of m eta ls . P e rcy F .

Cowing (P .) ............................................................................................................. 488Process for recovering m eta l. A rch ibald W . D iack ( P .) ...............................488Process for te stin g com bustib le gas. H en ry L . D o h e rty (P .) ....................395P rocess for th e sep a ra tio n of gaseous m ix tu res in to th e ir elem ents.

Georges C laude (P .) ............................................................................................. 438P rocess of d istilling coal. Jo n as W . A ylsw orth (P .) ................................. 491.P rocess of ex tra c tin g m eta ls from th e ir ores. W illiam E . G rcenw alt

(P .) ............................................................................................................................. 555P rocess of m ak ing sodium cyanidc. O tto L iebknech t (P .) ........................ 489P rocess of o b ta in in g am m onium sa lts from gas. K a r l B urkheiser

(P .) ............................................................................................ 557Process of p ro d u cin g com pound m eta l bodies. Jo h n F erreol M onnot

(P .) ............................................................................................................................. 492P rod u cer G as-F ired F urnaces. O skar N agel (B o o k )................................. 104P ro p rie ta ry m edicines, th e re la tion of th e chem ist to . W . A. P u c k n e r. 155P urch ase of iron m ines (N o te ) ................................................................................. 559P urifica tion of soap lye g lycerine b y th e G arrigues process, recovery

and . G. A . M oore........................... 283P urifica tion , p re sen t s ta tu s o f ozone w ith reference to a ir. R alp h D.

S m all (A d d .) ........................................................................................................... 534P y rite an d m arcasite , ex a c t de te rm in atio n of su lp h u r in . E . T . A llen

a n d Jo h n J o h n s to n ............................................................................................... 196P y r it ic con cen tra te s for silver a n d gold, c rucible assay of. Geo.

B orro w m an ............................................................................................................... 251

Q U A N T IT A T IV E dete rm in atio n of cane sugar b y th e use of in vertase ,the. C. S. H u d s o n . . . . ........................................................................................ 143

Q uality of p la tin u m , th e (E d .) ................................................................................ 497R A D IU M discovery , a B ritish (N o te ) . ............................................. 558R ap id d e te rm in atio n o f lead in ores b y e lectro lysis w ith s ta tio n a ry

electrodes, th e . R . C. B en n er.......................................................................... 348R ap id e stim atio n of ava ilab le calcium oxide in lim e used in cyanide

w ork. L . W . B ah n ey ......................................................................................... 407R ap id m eth od fo r th e e lec tro ly tic d ete rm ination of copper in ores. R .

C. B en n er................................................................................... 195R ap id m eth od of de te rm in ing c rude fiber. J . M. P ick e l.......................... 280R ap id saponification of f a t for t i te r dete rm in atio n . Chas. V. Zoul

(N o te )........................... ......................., .....................................................................479R eag en t b o ttle , a new. W ilfred W . S co tt (N o te )..................................... 67R eac tio n of lim e a n d gypsum on som e O regon soils. C. E . B rad ley . . 529R ecen t in v en tio n s .....................74, 108, 230, 295, 333, 365, 393, 437, 488. 555R ecen t progress am ong m edicinal sy n th etics . V. C ob len tz ................... 352R ecovery and purifica tion of soap lye g lycerine b y th e G arrigues p ro ­

cess. G. A. M oore................................................................................................ 283R ecovery o f w aste p la tin u m , n o te on th e . A. W . B la ir .......................... 102R ectification of b in a ry liquid m ix tu res, d ifferen tial condensation in

d istilla tion and . A lcan H irsc h ..................................................... 409R ed u ctio n of tin dross in an electric furnace . R . S . W ile (N o te ) 544

R efrigera tio n for a n a ly tica l a n d in du stria l investiga tions a t low tem ­p e ra tu re s , convenient m eth od of. Jam es O. H a n d y ................. 92

R ela tio n betw een fa t an d calcium in cream . H . C. L y th g oe andC larence M arsh ................................................................................................. 327

R ela tio n o f p o t experim ents to. th e activ e phosphoric acid o f th e soil.G. S. F ra p s ................................................. 350

R ela tio n o f th e chem ist to p ro p rie ta ry m edicines. W . A. P u c k n e r . . . 155R ep o rts o f C hem ical L ab o ra to ry o f A m erican M edical A ssociation,

V ol. I (B ook)................................................................................................... 294R esin it, b ak e lite and . D r. L. H . B aekeland (C o r.) .................... 478R esin ite a n d b ak e lite in ven tio n s (N o te ).......................... 494R eview s..................: .................................................................................................49, 352R h e o s ta t, e lec tric com bustion furnace , la b o ra to ry trea tin g furnace and.

Geo. M. B e rry .................................................................................................. 255R o ta tin g g rap h ite anode, a . J . W . T u rre n tin e ....................................... 342R u b b e r chem istry . W . C. G eer (E d .) ....................................... 77R u b b er su pp ly in M exico. G uayule (N o te ) ............................................... 494

S A L IC Y L IC acid , a source of erro r in th e exam in a tio n of foods for.11. C. S herm an .................................................................... 24

S a lt L ake, com p ara tiv e analyses of w a te r from G rea t. W . C. E baugha n d W allace M acF arlane ..............................................................................454

S alts , th e p rice o f p o tassium (E d .) ........................................................................ 497S am ple alloys, m aking . R . C. B enner (N o te )............................................... 546S am ple of w hea t, a m illing m achine for sm all. Geo. A. O lso n ...................... 527S am pling , accu racy in. F red C. W e ld ......................... 426S aponification o f f a t for t i te r de te rm in atio n , rap id . Chas. V. Zoul

(N o te ) ................................................................................................................. 479School for th e lea th e r in d u s try , trad e . A llen R ogers (A d d .) ....................474Science to in d u s try , th e app lica tion o f (E d .) ..................................................... 498S den tific a n d In d u s tr ia l Socie ties..........................67, 105, 222, 310, 331,

.............................................................................................360, 391, 429, 484, 550Scientific p re p a ra tio n and app lica tion o f p a in t. G . W . T ho m pso n . . 87S co tt oil te ste r, th e (N o te )................................................................................... 482S ep a ra tio n and dete rm in atio n of cocain a n d s try chn in , an d a tro p in

a n d stry chn in w hen th ey occur to ge ther. I I . C. F u lle r ....................378S ep ara tio n to o re dressing, app lica tion of e lec trostatic . F . S. M ac­

G regor........................................................................................................................ 517S ilver and gold, c rucible assay of p y ritic con cen tra tes fo r. Geo.

B orro w m an ................................ 251Silver, th e effect of v a ry in g am o u n ts o f lith a rg e in th e fire assay for.

K en n e th W illiam s................................................................................................ 406Slag p av in g b locks, English (N o te ) ..................................... 495S m all sam ples o f w hea t, a m illing m ach ine for. Geo. A. O lson 527S m elter, th e Tooele. C. H . R ep a th an d A. G. M cG regor......................... 537S m elting b y e le c tr id ty (N o te ).................................................................................. 559Sm oke prob lem and th e com m unity , th e . C harles B askerv ille 355Sm oke, th e n eu tra liza tio n a n d filtra tio n of sm elter. W . C. E b a u g h . . 372 Soap lye g lycerine b y th e G arrigues process, recovery an d purifica tion

of. G. A. M oore................................................................................................... 283Sodium b enzoate in ca tsu ps, th e m odified L aW all m eth od for th e

dete rm in atio n of. W . D. M cAbee (N o te ) ............................................ 544Sodium chloride in m ilk, de te rm in atio n of. P au l P o c tsch k e ......................210Soil, b ac te ria l a c tiv ity a s a corrosive influence in th e . R ich a rd H .

G aines........................................................................................................................ 128Soil con s titu en ts , effect of lime upon th e so lub ility of. F . W . G aith er . . 315 Soil F e rtility and P erm an en t A gricultu re . Cyril G. H opk ins (B o o k ). . 483 Soil h um u s as dete rm ined b y d ifferen t m ethods. Sherm an L e a v i t t . . 269 Soil n itro g en in re la tio n to th e b a s id ty of th e soil an d to th e g row th of

legum es, av a ilab ility of. T . L. L yon and Ja s . A. B izzell....................313Soil phospha tes, av a ilab ility of. W . P . K e lley ............................................ 277Soils, effect o f gypsum on alkali in . W . F . S u th e rs t ....................................329Soils o f E a s te rn O regon, n itrogen an d carbon in th e v irg in an d fallow ed.

C. E . B rad ley ...................................................................................................... 138Soil, re la tio n of p o t experim ents to th e ac tiv e phosphoric a d d of the.

G. S . F ra p s .......................................................................................................... 350Soils, th e chem ical an d m ineralogical exam in a tio n of som e Chinese

te a . W . O. R obinson an d W . J . M cC aughey..........................................462Soils, th e reac tio n of lim e and gypsum on som e O regon. C. E .

B rad ley ..................................................................................................................... 529Solders an d jo u rn a l b rasses, th e analysis o f b a b b itt m eta ls. D . J .

D em orest.................................................................................................................. 80Solid b itu m en s, t h d r P hysica l an d Chem ical P rop ertie s. S. F . Peck-

h am (B ook)............................................................................................................. 331S olu tions, th e d e te rm in atio n o f free acid in hyd rogen perox ide. L in-

wood A. B row n ....................................................................................................... '377Solvents, th e use o f im m isdb le . R oe E . R em ing ton (N o te ) ......................546Som e effects of feeds u pon th e p ropertie s of la rd . C. L . H a r e . . . . . . . . 264Som e im perfec t pav ing bricks. Jam es C. L aw rence and C harles J .

B o n e r................................ 524Som e lab o ra to ry devices. J . M. P ickel (N o te )............................................... 360Som e new tests . D r. F red . K le in .......................................................................... 389Som e v aria tio n s in o ffidal m eth od for determ in atio n of v o la tile m a tte r

in coal. A. C. F ieldner a n d J . D . D av is ................................................. 304Source of e rro r in th e exam in a tio n of foods for salicylic a d d , a . H .

C. S herm an ............................ 24

574 T H E JOURNAL OF IN D U STR IA L A N D ENGINEERING C HEMISTRY. Dec., 1910

S oxhlet a p p a ra tu s , a m odified. V. E . H eu d crso n ........................................ 219Spanish p ap rika . A rth u r Low enstein a n d W . P . D u n n e ........................... 139Spray , com position of lim e-sulfur. H . V . T a r ta r a n d C. E . B ra d le y .. 271 Spices, influence of th e m eth o d of h ea tin g on th e non-volatile e the r

e x tra c t of. A rth u r Low enstein a n d W m . P . D u n n e .......................... 47S tan d a rd A nalyzed Sam ples— G eneral In fo rm ation , B ureau o f S tan d ­

a rd s (B ook).............................................................................................................. 428S tan d a rd sam ples. B ureau o f S tan d ard s , W ash in g to n ....................................359S torage o f coal, losses in the. H oracc C. P o r te r an d F . K . O v itz 77S try chn in , a n d a trop in a n d s try chn in w hen th ey occur together, sep ara ­

tion and dete rm in atio n of cocain and . H . C. F u lle r .............................378S tud ies in a sp h a lt. C. J . F ra n k fo r te r .................................................. 239S tud ies on th e carbenes. K en n e th G era rd M ackenzie ................................ 124S tu d y o f m ate ria ls as a su b jec t in a course of chem ical engineering,

th e . Chas. F . M cK enna (A bs.)..................................................................... 364Sucrose in g rapes, th e occu rrence of. W m . B . A lw ood (N o te ) 481Sugar b ee t, o p tically activ e non-sugar o f the. W . H . R ee s ........................ 323S ugar cane ju ice a n d sugar house p ro d u cts , occurrence of form alde­

hyde in . P . A . Y oder an d W . G. T a g g a r t ............................................... 260S ugar lost b y en tra in m en t from evap ora tors , th e determ in atio n of. R .

S. N orris ................................................. 401S ugar m an u fac ture con tro l ap p a ra tu s , th e m illing of cane in . G. L.

S pencer ........................ . ................................................................................ 253Sulpliide so lu tions, dissolving chem icals and ag ita tin g so lu tions, some

problem s in th e m an u fac tu re a n d ag ita tio n of. O skar N agel,P h .D . . ............................................................................................................. 341

S ulphur in b ra ss a n d bronze, determ in atio n of. G u stav T h u r n a u e r . . 293 S u lp h ur in illum ina ting gas, a com parison of B olling’s, H ard ing ’s and

D reh sch m id t’s m ethods for determ in ing . E . P . H ard ing andCarl T a y lo r .............................................................................................................. 385

S ulphur in p y rite and m arcasite , ex ac t de te rm in atio n of. E . T . A llenan d Jo h n Jo h n s to n ........................................... 196

S u lp h ur sp ray , com position of lim e-. H . V. T a r ta r a n d C. E . B rad ley .. 271 S un ligh t an d a ir u pon som e lub rica tin g oils, th e action of. C. E .

W a te rs ....................................................................................................................... 451S yn th etics , recen t progress am ong m edicinal. V. C ob len tz ........................ 352

T A N N IN G m ate ria ls , vegetable. Jo h n H . Y o cu m ................................... 216T ea soils, th e chem ical a n d m ineralogical exam in a tio n of som e Chinese.

W . O. R obinson an d W . J . M cC aughey............................................ 462T echnical p ap e r, leng th of a . W ilson H . L ow ............................................ 221T echnical p ap e r, le n g th of a . J . W . T u rre n tin e ............................................ 157T echnical papers, leng th of. R . C. B en n e r .........................................................331T echnologie d cr F 'e tte u n d Oele. G u stav H afte r (B o o k ).......................... 391T em p era tu re s, an im proved oven for h igh . H . W . C lark a n d G. O.

A d am s....................................................................................................................... 220T em p era tu re w ork of th e B ureau of S tan d ard s . C. W . W a id n e r 49T es t for caram el, iden tification . G . H . P . L ic h th a rd t .............................. 389T ests , som e new. D r. F red . K le in .........................................................................389T este r, th e S co tt oil (N o te )....................................................................................... 482T ex t-B ook of B o tan y an d P harm acognosy . H en ry K raem er (B o o k ) ..

........................................................................ 104, 549T heorie dcr G ew innung u n d T rcn uu n g der A etherischen Oele durch

D istillation . D r. C. von R echenbcrg (B o o k )...........................................390T in dross in a n e lectric furnace , red u c tio n of. R . S. W ile (N o te ) . . . . 544 T itre dete rm in atio n , rap id saponification of fa t for. Chas. V. Zoul

(N o te ) .................................................................................................................. 479T ooele sm elter, th e . C. H . R cp a th and A. G. M cG regor.......................... 537

T ra d e school fo r th e le a th e r in d u s try . A llen R ogers (A d d .) ....................474T ran sac tio n s o f A m erican In s t i tu te of C hem ical E ng ineers (B o o k ). . . 390T re a tm e n t o f h igh-speed tools, h ea t. C. P . B erg ...........................................510T ribo-lum inescencc. W . S. A ndrew s (N o te ) .................................................... 478T rin itro to lu en e , th e t ru e m elting p o in t of. A. M. C om ey...................... 103T ru e m elting p o in t o f tr in itro to luen e , th e . A. M. C om ey...................... 103T yp h o id fever epidem ic in G eorgia, th e v a lu e of a chem ical analysis

as show n in trac ing th e cause of a . H . B . A rb u ck le ............................. 349

U N D E R G R O U N D w ate rs for m an u fac tu rin g purposes. W . M.B ooth (A bs.)........................... 365

U niform ana ly tica l m eth od s for p ho sp ha te rock. C. F . H a g e d o rn .. . . 158 U nlim ed land , after-effects o f certa in pho sp ha tes on lim ed and . II.

J . W heele r.............................................................................. 133U ntersucliung der M ineralole a n d F e tte . D r. D . H olde (B ook) 29U se for th e Gooch in p a in t analysis, a . W arren I . K ee ler........................ 388Uses for ra re e lem ents and special com pounds. G ellc rt A llem an (E d .) . 237U se o f ferro -titan iu m in Bessem er rails. P . H . D u d le y .............................299U se of im m iscible so lvents, th e . R oc E . R em ing ton (N o te ) ................. 546U tiliza tio n in th e Pacific N orth w est, conservation and . H . K . B en­

so n ........................................................................... 100V A C U U M furnace in sta lla tio ns in th e research lab o ra to ry o f th e

G eneral E lec tric C om pany, e lectric. W . C. A rsem .......................... 3V alue of a chem ical analysis as show n in trac ing th e cause of ty ph o id

fever epidem ic in G eorgia, th e . H . B . A rb u ck le ..................................349V an N o stran d ’s Chem ical A nnual. Jo h n C. O lsen (B o o k )........................ 428V aria tio n s in car p a in tin g p rac tice . C arl F . W o o d s................................... 130V egetab le oils, th e d etec tion of fish oils in . O tto E iscnsch im l a n d

H . N . C op thorne ............................................................................................... 43V egetab le tann ing m ate ria ls . Jo h n H . Y o cu m ............................................. 216V olum etric determ in atio n of po tassium b y th e c ob a lti-n itrite m ethod .

O. M. S h ed d ............................................................................................................ 379V iscous p roducts , n o te o n m oistu re in . A rth u r L ow enste in ....................330V ola tility of cocain, n o te o n the. H . C. F u lle r ............................................... 426V olum etric m eth od , d e te rm in atio n of phosphoric acid b y th e official.

F . B . C arp en te r ................................................................................................. 157

W A T E R from G rea t S a lt L ake , com p ara tiv e analyses of. W . C.E bau gh a n d W allace M acF arlane .................................................................. 454

W a te r o f th e C olum bia and W illam e tte rivers. C. E . B ra d ley . . . 293W a te r p roblem s. W illiam M. B o o th .................................................................... 503W a te r purified b y ozone (N o te ).............................................................................. 442W ax , co n stitu en ts of Candelilla. G. S. F rap s an d J . B . R a th e r 454W eig ht of dextrose, th e norm al. C. A. B row ne ..............................................526W estern S ociety of T echnical C hem ists and. M etallurgists, fifth general

m eeting of th e .................................................................................. 74W e t process fo r th e tre a tm e n t of ores. H . T . D u ra n t ..................................437W h ea t, a m illing m achinc for sm all sam ples of. Geo. A. O lso n 527W hiskey , th e d istilla tion of. A. B . A d am s...................................................... 34W illam ette rive rs , w a te r of th e C olum bia and . C. E . B rad ley ................ 293W iley m eth od for determ in ing th e m elting po in ts o f fats , im provem en t

of the. H a rry S teenbock (N o te ) .................................................................. 480W ood tu rp e n tin e associa tion ..................................................................................... 554W orld m eta l p roduction (N o te )..................................................................................442W o rk s labo ra to ry , th e (E d .) ..................................................................................... 371Z lN C in ores, th e e lec tro ly tic d e te rm in atio n of. Geo. K em m erer.. . . 375

T R A D E M A R K E DJOSEF K A V A L IE R Bohemian Glassware

Until recent years best Bohemian Glassware signified that manufactured at the famous factory of J05ELF KAVAL1E.R, 5azava, Bohemia.Of late, many very inferior imitations have been put on the market, and sold as the G enuine J05E.F KAVA­LIER, resulting in som e chemists obtaining a poor opinion of this glassware. To safeguard your interests when ordering J 0 5 ELF K A V A L 1L R ware the m a n u fa c tu re r h a s now registered thistrade-mark which is stam ped on everya r t ic le , excepting b o t t l e s and com­bustion tubing which B S h B are provided with labels.Prof. Kohlrausch, in his “Treatise on Glass,” states that J05E.F KAVALIE.R glassw are is th e best a lkali- resisting chem ical glassw are m anufactured. This hard glass, although a trifle thinner than som e other wares, is unusually uniform, and can safely be heated over the bare flame, and contents heated in the least possible time. JOSEF KAVALILR glassware costs a trifle more than ordinary ware, but it is by far the cheapest in the end.

Insist ^on th e w are bearing th e trade-m ark. A ccep t no substitutes.

For prices see our chem ical apparatus catalogue

EIM ER & A M E N DH eadquarters fo r L abo ra tory S u p p lie s o f Q uality

205-211 THIRD A V E ., NEW YORK CITY

V^V A L/f*,

e 0 HEM'&Austria

K i n d l y m e n t i o n th i s J o u r n a l w h e n w r i t i n g t o a d v e r t i s e r s .

PROFESSIONAL DIRECTORYCharles € . Kawin Co.

C h e m ists 5«? M e t a l l u r g i s t sL a b o r a t o r i e s :

C h i c a g o , I I I . ; D a y t o n , O h i oT o r o n t o , C a n . u-io

m ariner $ RoskinsC h em ists îïïp Ass a t e r s

81 SOUTH CLARK STREET i-nCHICAGO

Fred N. Arnold, J r .Chemical EngineerM a n y y e a rs ’ e x p e rie n ce in

O IL S, F A T S A N D S O A P S .a t y o u r se rv ice

61 R ingold S tree t, D ayton, O. Aml1

T he Colum bus LaboratoriesC hicago, Illin o is

D epartm entsM ed ica l Food C om m ercial

M illin g and B akingE x p e rt S taff o f C o u r t and M ed ieo -L e tfa l

C o n s u lta n ts W o rk 3*»i

C. C. Parker, m.S.SOLICITOR or CHEMICAL PATENTS

S u i t e 6 M c G i l l B u i l d i n g

W A S H IN G T O N , D. C.

10-12

Edward Gudeman, Ph.D.Consulting Chemist and Industrial Engineer

Food a n d T ech n ica l E x p e r t b efo re C om m ission s a n d C ourts. A dvice on R ules, R eg u la tio ns , L ab e lin g a n d R eq u ire m en ts u n d e r F ed e ra l a n d S ta te Food L aw s. G e n e ra l C hem ica l A na lyses , In v e s ­t ig a tio n s a n d R esearches.Chicago, Illinois IJ-10

H. E. WIEDEMANN, CLE,Consulting and Analytical Chemist

Chemical Engineer Suite 721 Holland Bidg. :: :: :: Saint Louis

The Atwater Bomb Calorimeter is the most satisfactory apparatus made for the direct determination of the heat of combustion of Coal, Oils, Foods, etc.M anufactured by

S. C. DINSMORE, Newark, N. J.C orrespondence Solicited. 1-11

Samuel P. Sadder $ SonC o n su ltin g a n d A n a ly t ic a l C h em ists

A n a ly se s a n d re p o r ts m ad e in a ll b ra n c h e s o f In d u s tr ia l C hem is try .E x pert assistance in the Development o f Chemical P ro ­cesses and Patents, and Preparation of Testi­m ony in Chemical Pa ten t Suits.Philadelphia, PDr. C harles f l . Brampton

cnsuititta and A nalytical Chemist Seven years in the B ureau of C hem istry, D epartm ent of A griculture T w enty years Chief C hem ist, In terna l Revenue B ureau.

R e p re s e n ts c lie n ts b e fo re th e D e p a rtm e n ts a n d C o n g ress io n a l U o m m itte e s , A dvice c o n c e rn in g th e re q u ire m e n ts o f F ed e ra l L aw s g o v e rn in g th e m an u fa c tu re a n d sa le o f food p ro d u cts .E vans Building, W ashing ton , D. C. 10-11

FOR R EN T —L ab ora to rie s in the specially co n ­s tru c ted , ten -s to ry , fire-proof C hem ists’ B uilding, 50 E as t 41st S treet, New Y ork, th e low er p a rt of w hich will be occupied by th e C hem ists’ Club. R eady for occupancy F eb ru ary 1, 1911. For descrip tive p am ­phle ts and o th e r p a rtic u la rs , apply to M orris Loeb, 106 W est 55 th S treet, New Y ork. 2—”

ALLEN’S COMMLRCIAIF O U R T H E D I T I O N R E V

E d i t e d b y H E N R Y LEFFM A NN , M.A., M.D., p r o f e s s o r C o l l e g e o f P e n n s y l v a n i a ; W . A. DAVIS, B.Sc., A. C .ICAL R E S E A R C H LABORATORY. C lT Y AND G U ILD S C O L L E G E , AND SAM UEL S. SADTLER, S.B., V IC E -P R E S ID E N T O A m e r i c a n I n s t i t u t e o f C h e m i c a l E n g i n e e r s .

VOLUME 1.— Edited By H E N R Y L E F F M A N N and W. A. D AV IS .Introduction, By W. A. D AVIS; Alcohol», By G. C. J O N E S ; Malt and Malt Liquors. By JU L IA N L. B A K E R ; Wine» and Potab le Spirits, ByG. C. J O N E S ; Yeast, By E M IL S C H L 1C H T IN G ; Neutral Alcohol ic Derivative*. By H E N R Y L E F F M A N N ; Sugars, S tarch and it» Iaomer»,By E. F R A N K L A N D A R M S T R O N G ; Paper and Paper-making Materia ls , By R. W. S IN D A L L ; Acid Derivat ives of Alcohol , By H E N R Y L E F F M A N N ; A ppendix; Index.86 Il lustrations. Octavo, x 4- 576 pages. Ready. Cloth, $5.00 net.VOLUME II.—Edited By H E N R Y L E F F M A N N and W. A . D A V IS .Fixed Oils, Fat» and Waxes, By C. A IN S W O R T H M IT C H E L L ; Special Characters and Modes ol Examining Fats , Oils and Waxes, By L E O N A R D A R C H B U T T ; Butter Fat . By C E C IL R E V IS and E. R. B O L T O N ; Lard . By C. A IN S W O R T H M I T C H E L L : Linseed Oil . By C. A. K L E IN ; Higher Fat ty Acids. By W. R O B E R T S O N ; Soap. By H E N R Y L E F F M A N N ; Glycerol. By W. A. D AV IS ; Cholesterol». By JO H N A D D Y M A N G A R D N E R ; Wool-fat, Cloth Oils. By A U G U S T U SH. G ILL.14 Illustrations. Octavo, x -f 520 pages. R eady Cloth, S5.00 net.VOLUME III .—Edited By W. A. D A V IS and S A M U E L S. S A D T L E R .Hydrocarbons, By F. C. G A R R E T T ; Naphtha lene and its Derivatives ,By W. A. D AV IS; Bitumens, By S A M U E L S. S A D T L E R , Aromatic Acids, Bv E D W A R D H O R T O N ; Gall ic Acid and its Allies. By W. P. D R E A P k R ; Ph tha l ic Acid and the Phthaleins, By W. A. D AV IS; E x ­plosive», By A. M A R S H A L L .26 I llustrations. Octavo, x + 637 pages. R eady. Cloth, S5.00 net.VOLUME IV.—Edited By W. A. D AV IS and S A M U E L S. S A D T L E R .Resins, By M. B. B L A C K L E R ; Essential Oils, By E. J . P A R R Y ; Hydrocarbons and Ketones of Essential Oils, By T . M. L O W R Y ; Caoutchouc and Guttapercha . By E. W. LEW IS; Special Characters of Indiv idual Oils and Terpeneless Essential Oils, By H E N R Y L E F F ­M A N N and C H A R L E S H. L aW A L L ; Tab les of Essential Oils.7 Illustrations. Octavo, viil + 466 pages. R eady. Cloth, S5.00 net.

P . BLAKISTON'S SON & CO., P u b l i:

_ ORGANIC ANALYSISW R I T T E N A N D R E V I S E DO F C H E M IS T R Y AND TOXICOLOGY IN TH K W O M A N ’S M E D IC A L G . I . , F O R M E R L Y L EC TU R ER AND ASSISTANT I N T H E C H E M -

I m p e r i a l C o l l e g e o f S c i e n c e a n d T e c h n o l o g y , L o n d o n ; f t h e A m e r i c a n E l e c t r o -c h e m i c a l S o c i e t y ; m e m b e r

VOLUME V.—Edited By W. A. D A V IS and S A M U E L S . S A D T L E R .Tannins, Dyes, Colouring Matters . Leathers , By W. P. D R E A P E R : Diphenylmethane and Colouring Matters . By J. T . H E W IT T ; Colouring Matters of Natural Origin. By W. M. G A R D N E R ; Analysis of C olou r ­ing Matters , By W. P. D R E A P E R . Inks, Carbon Papers, Typewri ter Ribbons , etc.. By P E R C Y H. W A L K E R ; Colouring Matters in Food, By A. F. S E E K E R . N ow P rin ting .VOLUME VI.— Edited By W. A. D AVIS and S A M U E L S. S A D T L E R .Amines and Hydrazines . By W. A. D AV IS; Anil ine and its Allie*, By S. S. S A D T L E R ; Other Bases from Tar . By W. H. G L O V E R : A lk a ­loids. By T . A. H E N R Y ; Volatile Bases. By F R A N K O. T A Y L O R : Nicotine and Tobacco Products , By R. W. T O N K I N ; Aconite Bases and Atropine, By F R A N C I S H. C A R R ; Coca Alkaloids, By S. P . S A D T ­L E R ; Opium. By F. O. T A Y L O R ; Strychnos Alkaloids, By C H A R L E S E. V A N D E R K L E E D ; Cinchona Alkaloids. By O L I V E R C H IC K . Assisted by D A V ID H O W A R D ; Berberine, By W. A. D AVIS; Caffeine, By J. F O X ; Cocoa and Chocolate, By R. W H Y M P E R .N early R eady for Press.VOLUME V I I . - E d i t e d By W. A. D A V IS and S A M U E L S. S A D T L E R .Vegetable Alkaloids, By G. B A R G E R ; Non-Basic Vegetable Bitter Pr inciples, By E. F. A R M S T R O N G ; Animal Bases, By W. J. G IE S ; Animal Acids. By J. A. M A N D E L ; Cyanogen and its Derivatives, By H E R B E R T P H I L L I P ; Non-Glucosidal Bitters, Bv G. C. J O N E S ; Ptomaines, By G. B A R G E R : Lact ic Acid . By W. A. D AV IS .R eady fo r Press M arch , JQ1 I .VOLUME VIII .—Edited By W. A. D A V IS and S A M U E L S. S A D T L E R .Proteids of Plants ; Prote ids of Milk and Milk Products; Milk; Meat and Meat Products; Prote ids of Digestion; Haemoglobin and its Allies; Prote ids or Albumenoids and Glue: Ultra Microscopy.T o be P ublished A u tu m n , j g i l .

O n receipt of Price, a n y volume w ill be sent carriage prepaid.WRITE FOR LETTER “ HOW TO SECURE A SET OF THESE BOOKS

UPON EASY TERMS.”

5 h e rs , 1012 W a l n u t St ., P h i l a d e l p h i a .I2 -IO

W h e n you advertise make your m oney do the most w ork by advertis ing in th e J ournals of the Amer= ican Chemical So= ciety.

P H O TO -M IC R O G R A P H IC O U TF ITWITH

T A S S I N IL L U M IN AT O R

Complete outfit for Micro - Examination and Photography of i v^que surfaces in- crucu.'sr metals, ores, cem entb, building stone, paint films, etc., etc. Seear'-’c.es by Mr. W irt Tassin on “The Microscope and some c f its ap­plications to Metal­lurgy” in Iren Age fo r June 9th, and the Iron Trade Review of same date.

Write for illustrated and descriptive pamphlet.A R TH U R H. T H O M A S CO.

I M P O R T E R S A N D D E A L E R S

M I C R O S C O P E S , L A B O R A T O R Y A P P A R A T U S A N D C H E M I C A L S

4200 W ALN UT S T R E E T , PH ILA D ELPH IA

K i n d l y m e n t i o n t h i s J o u r n a l w h e n w r i t i n g t o n d v c r t i s e r s .

BOOKS ON CHEMISTRYby Wilhelm Segerblom, A.B., Instructor in Chemistry at The Phillips Exeter Academy, Exeter, N. H.

If you w an t Chemists or wish to com­plete your chemical library, consult the w an t departm ent of our publications.

TA B LES O F P R O P E R T IE S of over fifteen hundred common inorganic substances. An indispensable reference book for chemists, manufacturers, and science teachers. Gives common names, chemical and physical properties, and solubilities of common chemicals. 8vo, x + 144 pages. Cloth, $3.00 (prepaid).F IR S T Y E A R C H E M IS T R Y , a text in elem entary chemistry for secondary schools. Embodies the latest and best thought relating to the presentation of chemistry to students. 12mo, xxv + 410 pages. Cloth, $1.50 (prepaid).

C o m p l i m e n t a r y c o p ie s a r e n o t g iv e n , b u t s p e c i m e n pages o f e i t h e r b o o k a re s e n t f re e o n r e q u e s t .

EXETER BOOK PUBLISHING COMPANY • EXETER, NEW HAMPSHIRE.

2 5 0 0 - 5 0 0 0 A M P E R E U N I T S

T O W N S E N D CELLE L E C T R O L Y T I C

A L K A L I A N D C H L O R I N E

C H L O R I N EF O R M E T A L L U R G Y

C A U S T IC SO DA BLEA C H IN G PO W DER

4 Y E A R S ’ O P E R A T I O N

N I A G A R A F A L L S , N . Y.

HOOKER ELECTROCHEM ICAL COMPANY4 0 W A L L S T R E E T , N E W Y O R K