testing milk and its products

1
SBW BOOKS. $IO\/ I'H.L). Sew I'ork: The Macmiilan Co. 1907. bvo. lip. sv .t 218. I'rice, $1.50 net. I hc work includes introductor?- exercise5 in gravimetric analysis, acidimetry and alkalimetry, perinanganate and dichromate titrations, iodimetry, stoichionietry, and a sectiori 011 agricultural analysis coyvr. ing the examination of milk, butter, cereals and feeding materials, itlr- tilizers and soils. The book is well written and contains :I nuiiiber of good illustmtions. It will be welcomed by those beginners in agricultural analysis who have been obliged to use the methods of the -4ssociation of Official Agricultural Chemists in bulletin form in lieu of a test-book. 'Che procedures Lire clearll- and explicitly described and the c*xplandtory notes are gei:~ I ;ill\. good. The numerical data selected to illustrate norinal coniposition could in some cases be improved, but thr 0111~. figures likely to be seriously misleading are those for starch in grain products on page IZI. The failure of the authors to make use of the conceptions of ionizatioii, mass action and solubility product in the discussion of inorganic reactions and the entire oniissioii of electrolytic methods are unfortunate in a text- book which is likely to represent the sole training in quantitative anal! I_ sis of many of the students who use it. 'These, howel-er. arc oinissions which may be supplied by the teacher and which the authors will proba- bly correct in a subsequent edition. The book will fill a real need in the cas? of the agricultural student for whom it is especially intended arid will be found useful arid sugges tive to many others. It is coniInendabl!- frre froni typographical errors and its general make-up is excellent. Testing Milk and Its Products. By L:.IRIU,YGTON .,nd ~Y.XLL, Madisiin, \\.is.: 'I'lic present constitutrs the eighteenth edition, the first edition haying been issued over ten Tears ago. Considerable r a t t e r has been added, which includes new met hods that have come into recent use. I,. L. v. s. rl Jlenduta Book Co. 1908. pp. YL)~. Price, $r.o,B The authors have revised their useiul book. The Chemistry of Commerce. By KOBERT KENNEDV DUNCAN. Harper Brothers. It is perhaps questionable whether '~Clieiuistry of Coriii~ii.rce *' should be reviewed in a scientific journal like that of the Cheniical SocietJ-, inas- Inuch as the book can only be regarded as a report on certain spectacular topics, sortie of which barely lie within the broad doli ains of cheniistr!,. At the present time, anything which tends to stiniulatc indubtriai :and applied cheiiiistr!- in tht. IJnited S;tatc.s. \vi11 lie liail~.d Tvir I: dclighr ~JY eycry chemist of the land. 'That a*Cheriiistr!. of Commerce " is iri tejltled to dn thk. i5 evident iroiii the author'>, pr LY~ arid introduction. mThetller lie has succct-dctl in stinlulating thc :i:as in this hig11l.v ~CC~J- Price, $I .50.

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SBW BOOKS. $IO\/

I'H.L). Sew I'ork: The Macmiilan Co. 1907. bvo. lip. sv .t 218. I'rice, $1.50 net.

I hc work includes introductor?- exercise5 in gravimetric analysis, acidimetry and alkalimetry, perinanganate and dichromate titrations, iodimetry, stoichionietry, and a sectiori 011 agricultural analysis coyvr. ing the examination of milk, butter, cereals and feeding materials, itlr- tilizers and soils.

The book is well written and contains :I nuiiiber of good illustmtions. It will be welcomed by those beginners in agricultural analysis who have been obliged to use the methods of the -4ssociation of Official Agricultural Chemists in bulletin form in lieu of a test-book. 'Che procedures Lire clearll- and explicitly described and the c*xplandtory notes are gei :~ I ;ill\. good. The numerical data selected to illustrate norinal coniposition could in some cases be improved, but thr 0111~. figures likely to be seriously misleading are those for starch in grain products on page IZI.

The failure of the authors to make use of t h e conceptions of ionizatioii, mass action and solubility product in the discussion of inorganic reactions and the entire oniissioii of electrolytic methods are unfortunate in a text- book which is likely to represent the sole training in quantitative anal! I_

sis of many of the students who use it. 'These, howel-er. arc oinissions which may be supplied by the teacher and which the authors will proba- bly correct in a subsequent edition.

The book will fill a real need in the cas? of the agricultural student for whom it is especially intended arid will be found useful arid sugges tive to many others. It is coniInendabl!- frre froni typographical errors and its general make-up is excellent. Testing Milk and Its Products. B y L:.IRIU,YGTON .,nd ~ Y . X L L , Madisiin, \\.is.:

'I'lic present constitutrs the eighteenth edition, the first edition haying been issued over ten Tears ago. Considerable r a t t e r has been added, which includes new met hods that have come into recent use. I,. L. v. s.

r l

Jlenduta Book Co. 1908. pp. Y L ) ~ . Price, $r.o,B The authors have revised their useiul book.

The Chemistry of Commerce. By KOBERT KENNEDV DUNCAN. Harper Brothers.

It is perhaps questionable whether '~Clieiuistry of Coriii~ii.rce * ' should be reviewed in a scientific journal like that of the Cheniical SocietJ-, inas- Inuch as the book can only be regarded as a report on certain spectacular topics, sortie of which barely lie within the broad doli ains of cheniistr!,.

At the present time, anything which tends t o stiniulatc indubtriai :and applied cheiiiistr!- in tht. IJnited S;tatc.s. \vi11 lie l i a i l ~ . d Tvir I: dclighr ~ J Y eycry chemist of the land. 'That a*Cheriiistr!. of Commerce " is i r i

tejltled to dn t hk . i5 evident iroiii the author'>, pr L Y ~ arid introduction. mThetller lie has succct-dctl in stinlulating thc :i:as in this hig11l.v ~ C C ~ J -

Price, $I .50.