302[May n, 1878.gtitntxiit %mtxxan.

^&vevti$tment$.

InNide Paire, each inHertion - - - 75 ceutH a line.Hack I'ltue, each iiiMertiou - - - *1 .00 n Hue.

(About etgbt words tc a line.)

E'^n <ii ings may liead advertisements at the same rateper tine, by measurement, as the Utter press. Advertisements must be received at publication office as earlyas Thursday morning to appear in next issue.

Liquid Paints, Roofingv Slram Pipe and BoilerCovei'iiiirH. Steam Packing, Sheathing, Fire, Acidund Waterproof Coatings, Cements, etc. Send forHainples, Illustrated Catalogues, Price Lists, etc.

H. W. JOHNS ffl'f'g Co.,

87 MAIDEN LANE, N. T.

Parties wishing to introduce their manufactures into

CANADA

please communicato with

R . II. BUCHANAN & CO.,

DOMINIONMACHINERY DEPOT654 t'ruia Street, Montreal.

J U S X ISSUED.Woollen's Old I Ionic* Made New.

One Vol.; twenty-two 7x11 plates; price, prepaid, $1.50.Illustrated catalogue mailed on receipt of 3c. stamp.

A. J. BK'KNEl.L & CO., Pubs., 27 Warren 8t., N. Y.

NOMENCLATURE OF BUILDINGStones and Stone Masonry. By J. James R. Ckobs,Wii i 1 am K. Mkrkill, and Em.ah B. Van Winklk.A paper read before the American Society of Civil Engineers. An exhaustive article on Stone Cutting andMasonry, various Methods of Dressing, and Toolsemployed, with 84 illustrations. 19 Tools, illustrated,with Dimensions and How to Make. Squared, Quarry-faced, Pitched-face, and Drafted Stones. Rubble, Cut,Pointed, and Crandalied Stones, etc. Axed or PeanHammered and Patent Hammered Stones. BushHammered and Rubbed Stones. Diamond Panels.Rubble, Squared Stone. Range, Random, and AshlarMasonry, 34 illustrations In ajl, with practical Instructions. Contained In Sciknttfic American Supplement No. 113. Price 10 cents. To be had at thisoffice and of all newsdealers.

ESTABLISHED 1844. Cut Brass Gears, list free. Grant, 94 Beverly St., Boston.

BURR ILLS.

For tho best Vertical and Horizontal French Burr Grinding Mills,Portable Flouring Mills, and MillMachinery, address the Manufacturer and Patentee,

C. C. PHILLIPS,

4018 (iinml Avenue1,

PHILADELPHIA.

Kometuiiu for your Boy!

pleasure for spare hours, he earns his own pocket moneyprinting cards, etc., and It is tafe and instructive. SendSc. for catalogue.

KKLSEY & CO., M'f'rs, Meriden, Conn.'

North's Pat. Inlversal Lathe Dog

Is always in nearly perfect balance.^Always stands up square with thework, and will not 11 skew."

SEI.DEN G. NORTH. Ml No. 4th St., PbJJn.,Pa. 1

Pyrometers,For showing heat ofOvens, Hot Blast Pipes,

Boiler Flues, Superheated Steam, oil Stills. Ac.HENRY W.BULKLEY, Sole Manufacturer.

149 Broadway, N. Y.

Domestic Semi-Portable Engine,

2 and 4 horse power, and

The Peerless Portable Steam Engine,

for Agricultural and other purposes,from 6 to 10 horse power.

Nothing cheap bnt the price. Send fordescriptive catalogue and price list to

F. F. & A. B. I AN IMS, ffl'frs,

Cherry St., Lancaster, Pa.

JAPANESE ART MANUFACTURES.By Christopher Dresser, Ph.T>.,eto. Paper read beforeSociety of Arts. The Japanese Potter at Worlt. Curiousmode of Making Scarfs. How the Japanese Print onCloth. Japanese Process for Silk Ornamentation. Japanese Weaving. How Fine Japanese Fans are made.Japanese Method of Making Moulds for OrnamentalMinn 'or Vessels, Bronzes, etc. Japanese LacquerManufacture. Curious Method of Decorating LacquerWork. The Love and Pursuit of the Beautiful in Japan.A very entertaining, instructive, and comprehensivepaper. Contained in Scientific American Si ppi.k-m ent No. 1 1 5 . Price 10 cents . To be had at this officeand of all newsdealers.

BoundVolumes

OF THE

Scientific American.

Ac present, 1 have on hand the following boundVolumes of the SciENTmc AMERICAN, which I will sellat $1 00 each, either singly or by the quantity.

Old Series. New Series. New Series.

Vol. 7....3 Copies." 11. ...5

Vol. 1... 6 Copies.•■ 2...B "■• 8... 8 "

" 4. . 6 "" 8... 3 "" 10... 9" 11... 2 "" 12... 9 "" 13... 9" 14... 7 "

Vol.15.. 7 Copies.•• 16.. 8 5'

" 28.. 8 "" 82. .16 "

" W....4" 14....1 "

Vols, of the OldSeries contain oneyear's numbers,and the New Series six months.

The books will be sent by express on receipt of price.Address all communlcatioavt to

JOHN EDWARDS,1\ O. Box 773. New York.

CLIMAX

WasMi Machine,

Manufactured by

V. C. BAECHMAN fc CO.,

YORK, PA.

Reliable agents wanted. Descriptive circulars furnished.

JOSEPH C. TODD, Portland Cement,

(Formerly of Todd A Rafferty), Engineer and Machinist. Flax, Hemp, Jute, Rope, Oakum, and BaggingMachinery, Steam Engines, Boilers, etc. I also manufacture Baxter's New Portable Engine of 1877, of onehorse power, complete for 1125 ; can be seen in operationat my store. I will furnish specifications and estimatesfor all kinds of machinery. Send for descriptive circular and price. Address

J. C. TODD,

10 Barclay St., New York, or Paterson, S. J.

PTTTffPTmj'fJ DROP HAMMERS AND DIES, Frva VXU.11 tl wurking Metals. Ac.

The STILES 4 PARKER PRE?PRESSES.

■ Middletown, Conn

UPRIGHT DRILL

H.BICKFORD Cmc

CAMERA

Steam Puiups

For Mines, Blast Fnrnaces. Rolling

Mills, Oil Refineries, Boiler

Feeders, Ac.For Illustrated Catalogue and Bedwed Price List Bend toWorkx, Foot Enst '23d St., New York.

An assortment of

WOOD-WORKINQ MACHINERY

made by Richards, London & Kelley (dissolved); also, anumber of first-class MACHINE TOOLS (nearly asgood as new) of Philadelphia construction, on hand andfor sale. For list or inspection of machines and estimates, apply at the works of JOHN RICHARDS ft CO.,22d and Wood Sts., Philadelphia, manufacturers ofStandard Gauges and other Implements.

Friedmann's Patent

INJECTORS and EJECTORSAre the Most lieliable and Economical

BOILER FEEDERS

And "Water Conveyors

IN EXISTENCE.

MANUFACTURED EXCLUSIVELY BY

NATHAN & DREYFUS,

NEW YORK.

Also Patent Oilers and Lubricators.

Send for Catalogue,

ROMAN & KEENK'S. For Walks. Cisterns. Foundations, Stables, CcHars,BrldKes,Hes«!rv(ilrs, Breweries, etc

Hein it 10 cents for Practical Treatise on Cements.S. L. Merchant & Co., S3 Broadway, New York.

TURBINE WATER WHEELS.

New pattern. Increased percentage of powergiven. Estimates given on all kinds or MillMachinery.

O. J. HOI.LINGER, York, Fenn.

"LACKERS' VARNISHES, WHITE SnELLAC.

W. ZINSSER & CO„ 1H7 William St., N. Y.

MANUFACTURERS' SUPPLY STORE.

Agents for I . S. Sniicylic Acid Works.

BOGARDUS' PATENT UNIVERSAL ECCENTRIC MILLS—For grinding Bones, Ores, Sand, Old

Crucibles, Fire Clay, Guanos, Oil Cake, Feed, Corn,Corn and Cob, Tobacco, Snuff, Sugar, Salts, Roots,Spices, Coffee, Cocoanut, Flaxseed, Asbestos, Mica,etc., and whatever cannot be ground by other mills.Also for Paints, Printers' Inks, Paste blacking, etc.JOHN W. THOMSON, successor to JAMES BOUAR-DUS, corner of White and Kim Sts., New York.

TO ADVERTISERSISSSdo any newspaper advertising, the thibd edition of

Ayer & Son's ManualFOR ADTKUTISERS. 160 8vo.pp. More completethan any which have preceded it. Gives the names,circulation, and advertising: rates of several thousandnewspapers in the United: States and Canada, andcontains more information of value to an advertiserthan can be found in any other publication. All listshave been carefully revised, and where practicableprices have been reduced. The special offers arenumerous and nnusually advantageous. Be sure tosend for it before spending any money in newspaperadvertising. Address N. W. AYER & SON,Advertising Agents, Times Building, Philadelphia.

AHEAD OF AUL, COMPETITION.

^EjPHII/^DECPHr^

Lawn Mower

Welshing from 32Seven Sizes lor Hand Une.to 51 lbs. Three Sizes for Horse Power,!

These Machines did an amount of work on the Centennial Grounds equal to 10 years of ordinary use, without loss of time for sharpening or repairs—completelydistancing all competitors in that celebrated trial of6 months duration. GRAHAM, EMLEN & PASSMORE,Patentees and Manufacturers, 631 Market St , Phila., Pa.

Newly

LIGHT STANDARD 20 INCH

Grinding Mill

Male at New Haven, Conn.

Grinding Capacity

per hour,

6 to 40 Bushels.

Send for

Ulust'ed Catalogue.

Address

W. A. Foskett,

CPATENi

OLD ROLLED

SHAFTING.

The fact that this shafting has 75 per cent, greaterstrength, a finer finish, and Is truer to gauge, than anyotherln use renders it undoubtedly the most economical.We are also the sole manufacturers of the CelebratedCollins' PAT.ConPLiNG, and furnish Pulleys, Hangers,etc., of the most approved styles. Price list mailed onapplication to JONES & LAUQHLINS,

Try Street, 2d and 3d Avenues, Pittsburgh, Pa.190 S. Cnnal Street, Chicago, m., and Mllwaukle. Wis.J3T" Stocks of this shafting In store and for sale by

FULLER, DANA A FITZ, Boston, Muss.GEO. PLACE * CO., 121 Chambers St., N. T.

WJOrtt NON CHANGEABLE «V LATHE W&Gm»:Wjon

THE TELEPHONE. BY R. M. FERGUSON, F.R.S. Read before the Royal Scottish Society ofArts. Its Construction, Uses, and Working fully andphilosophically explained, with four illustrations. History of the Telephone. The Reis Telephone. Bell's.Wonderful sensitiveness. Difference between the Galvanic and the Telephonic Impulse. A curious experiment. Theory of the Telephone. Molecular Vibrationsof Metals. Magnetic Musiail Sounds. Cause of theSound. New Form of Telephone. Contained in Scientific American ScpplemkntNo. 120. Price 10 cents.To be had at this office and of all newsdealers. Also,in the same number, a Visit to the Inventor of thePhonograph. The Practical Uses of the Instrument inCheapfv reproducing Music. How the voice of thePrima Donna and the Elocutionist may be multipliedand preserved to all time. Usefulness of the Phonograph to the Blind, to Advocates, and others. Price ofthe Phonograph. An Improved Form, etc.

RISDON'S IMPROVED

TURBINE WATER WHEEL

yielded at the test of Turbines at Centennial Exposition the best results at all stagesof gate. Send for circular to

T. II. RISDON cfc CO.,

nit. Holly, N. J.

Manufacturers of HILL. MACHINERY.

PERFECT

NEWSPAPER FILE

The Koch Patent File, for preserving newspapers,magazines, and pamphlets, has been recently Improvedana price reduced, subscribers to the Scientific Ah-ekican- and Scientific America n Supplement can besupplied for the low price of *1.60 by mall, or $1.25 at theoffice of this paper Heavy board sides; inscription"SCIENTIFIC AMERICAN," in gilt. Necessary forevery one who wlBhes to preserve the paper.Address

MUNN & CO.,

Publishers Bcns.vTmc American.

ICE AT §1.00 PER TON.

The PICTET ARTIFICIAL ICE CO,,

LIMITED,Boom 51, Coal and Iron Eiohange, P. O. Box 3093, N. T.

Machinists' Tools.

New and Improved Patterns.Send for new Illustrated catalogue.

Lathes, Planers, Drills, &c.

NEW HAVEN MANtFACTlIKINC CO.,

New Haven, Conn.

SPEEDS

t. mi7/u, tint OSH • "" f- ■ ■i5rCCD»t \

;ntflttt 1. VTi tM^/^-'HLirODWrjOViRNpHc' L«WflEr,CJJ»I.V i

THE GEOLOGICAL ANTIQUITY OFFlowers and Insects. By J. E. Taylou, F.G.8. A plain,comprehensive review of the subject, bringing forwardmany Instructive facts; with six illustrations. Theinvariable correlation between insects and flowere.How they are fossilized. Fossil botany. GeologicalEvidences of Evolution. Correspondence in the succession of Animal and Vegetable life. Flowers necessaryto Insects, and Insects necessary to Flowers Insectsand Plants in the Devonian, the Switzerland Lias, theEnglish Stonesfleld Slate, the Tertiary Strata, the CoalMeasures, a Greenland, and other formations. A Peculiar Aspect of Evolution. Contained In TjciENTiprcAmehtcan Supplement No. liiO. Price 10 cents. Tobe had at this office and of all newsdealers.

THE

Eclipse Engine

Furnishes steam power for allAgricultural purposes. DrivingSaw Mills, and for every usewhere a first-class and economical Engine is reqnlred.Eleven first-class premiumsawarded, Including Centennial, 16. Refer to No. T, Issue ofTt, No. 14, Issue of 'TO of Scientific American for Editorial illustrations.

BELT PULLEY,

LlghtestjStrorigest, and bestmade. Secured to the Shaftwithout Kt-ys, Set Screws, Bolt s nr Pins ; also, A-ljt'-xtableDead Pulleys and Taper-Sleeve VovpHng*. Send for catalogue. Address Taper-Sleeve Pulley Works, Erie, Pa.

THE TANITE CO

STROUDSBURG, PA. *

EMERY WHEELS AND CHINDERSGEO. PLACE, 121 Chambers St., New York Agent.

ROCK DRILLING MACHINES

AIR COMPRESSORS.

MANUFACTURED BY BuR LEIChRoCkDrIIL C 0

send for Pamphlet. fitchburgwass.

MillStones and Corn Mills.

We make Burr Millstones, Portable Mills, Smut Mr.chines, Packers, Mill Picks, Water Wheels, Pulleys SGearing, specially adapted to Flour Mills. Sendcatalogue .

J. T. NOYE & BON, Buffalo, Ji, Y.

HARTFORD

STEAM BOILER

Inspection & Insurance

COMPANY.

W, B. FRAMLIN V. Pres't. J. M. ALLEN, Prest

J. B. PIERCE, Sec'y.

-!M!».CARYkTMOEN*

MACHINISTS' TOOLS

Best quality at low priceB. Radial Drills. Engine Lathes,Iron Planers, Car wheel Borers, Hydrostatic Presses,Axle Lathes.

NIl.KS TOOL WORKS, Hamilton, Ohio.

II. U. WORTIIINGTOIN,

!M0 BROADWAY. NEW YORK.Hydraulic Works, Van Brunt Street, Brooklyn,

Manufactures Pumping Engines for Water Works, ladally use at 100 stations. Also Steam Pumps, WaterMotors and Water Meters. See Scikntifio asil-ricavSupplem KNT, January 27th, 1577. Prices largely reducedJuly 1st. 1877.

WOODWORTH SURFACE PLANERS, HIS. Planersand Matchers, *350. S. 0. HILLS, 78 Chambers

Street. New York.

CAVEATS, COPYRIGHTS, TRADE

HARKS, ETC.

Messrs. Munn & Co., in connection with the publica

tion of the Scientific Americas', continue to examine

Improvements, and to act as Solicitors of Patents to

InTentors.

In this line of business they have had over thtbtt

tears' experience, and now have vnejualed fadlUUi

for the preparation of Patent Drawings, Specifications,

and the Prosecution of Applications for Patents in the

United States, Canada, and Foreign Countries. Messrs.

Munn & Co. also attend to the preparation of Caveats,

Trade Mark Regulations, Copyrights for Books, Labels,

Reissues, Assignments, and Reports on Infringeinciiu

of Patents. All business intrusted to them is done

with special care and promptness, on very moderate

terms.

Wc send free of charge, on application, a pamphlet

containing further information about Patents and how

to procure them ; directions concerning Trado Marks.

Copyrights, Designs. Patents, Appeals, Reissues. In

fringements, Assignments, Rejected Cases, Hints on

the Sale of Patents, etc.

foref</»i Patsnts.—We also send./rwey" chargt,i

Synopsis of Foreign Patent Laws, showing the cost and

method of securing patents in all the principal coun

tries of the world. American inventors should bear in

mind that, as a general rule, any invention that is valu

able to the patentee in this country is worth equaliyas

much in England and some other foreign countries.

Five patents—embracing Canadian, English, German,

French, and Belginn—will secure to an inventor the ex

clusive monopoly to his discovery among about oxs

hundred AND FIFTY millions of the most intelligent

people in the world. The facilities of business and

steam communication are such that patents can be ob

tained abroad by our citizens almost as easily as «t

home. The expense to apply for an English patent ■

$75; German, $100; French, $100; Belgian. $100; Ca«-

dian, $50.Copies of Patents.—Persons desiring any pWj

issued from 1836 to November 36. 1667. can be suppM

with official copies at reasonable cost, the price im

pending upon the extent of drawings and length or

specifications.Any patent issued since November 87, iSff!, at WW"

time the Tatent Office commenced printing *• dra*'

ings and specifications, may bo had by remitting to

this office $1.A copy of the claims of any patent issued since is*'

will be furnished for $1.When ordering copies, please to remit for the si

as above, and state name of patentee, title o' 'nfl"

tion, and date of patent. . .A pamphlet, containing rail directions for obtaining

United States patents sent free. A handsomely bo™

Reference Book, gilt edges, contains 140 pagw w

many engravii-3 and tables important to eTeJ^r.

entee and mechanic, and is a nsefnl handbook o L

ence for everybody. Price 25 cents, mailed free-

AddressMTJKN & CO.,

Publishers SCIENTIFIC AMERICAN'

37 Park R«w> "iV

BRANCH OFFICB-Comer of F a«&

Washington, D. C. -

ih t II. *

TendLCTlL TS"^ v^k"bard Ste., Philadelphia, and 69 Gold St, N«ff Ion-

THE " Scientific American" Is pri

ENEU JOHNSON & CO.'S INK..