188 



SCIENCE 



[N. S. Vol. XXIX. No. 735 



In older agricultural regions, where the cost of 

 beef production reaches the maximum, dairying 

 is generally resorted to, as it yields larger finan- 

 cial returns, and as a result more cheese and less 

 beef are used in the dietary. As the cost of meats 

 is enhanced, dairy products, as cheese, naturally 

 take their place (page 96). 



Food notions have, in many instances, been the 

 cause of banishing from the dietary wholesome 

 and nutritious foods, of greatly increasing the 

 cost of living, as well as of promulgating incor- 

 rect ideas in regard to foods, so that individuals 

 and in some cases entire families have suffered 

 from improper or insufficient food (page 253). 



The tables showing composition', digesti- 

 bility, etc., are taken from the publications of 

 the TJ. S. Department of Agriculture, based 

 on American work in which Professor Snyder 

 has played a large part. The chapters on 

 cereals and bread are mainly the results of 

 studies in his own laboratory. 



It would have added to the value of the 

 volume as a text-book if some of the illustra- 

 tions had been better prepared. A student 

 would find some difficulty in recognizing the 

 varieties^ of starch from the indistinct figures 

 given. On page 90 the centrifuge should 

 have been designated as of fractional size as 

 compared with the other apparatus or have 

 been omitted altogether. 



The water analyst wishes there had been a 

 word of caution on page 278 as to the metals 

 of which cheap water stills are often made. 

 The discussion of the ice supply might also 

 have included the statement that all ice used 

 directly in foods and drinks should be crystal 

 clear and not frothy or bubbly. 



The chapter on laboratory practise and the 

 admirable review questions will prove most 

 helpful not only to teachers of home econo- 

 mics but also to the general science teachers 

 many of whom are just ready to use this kind 

 of information in their classes. 



Ellen H. Eichards 



SCIENTIFIC JOURNALS AND ARTICLES 

 The opening (January) number of volume 

 10 of the Transactions of the American 

 Mathematical Society contains the following 

 papers : 



Eduard Study : " Zur Diflf erentialgeometrie der 

 analytisohen Curv^n." 



G. A. Miller: "The central of a group." 



J. I. Hutchinson : " The hypergeometrie func- 

 tions of N variables." 



Virgil Snyder : " Surfaces derived from the 

 cubic variety having nine double points in four 

 dimensional space." 



A. E. Young: "On a certain class of isothermio 

 surfaces." 



A. E. Landry: "A geometrical application of 

 binary syzygies." 



L. E. Dickson: " Definite forms in a finite field." 



The December number (volume 15, number 

 3) of the Bulletin of the American Mathe- 

 matical Society contains : " The September 

 Meeting of the San Francisco Section," by 

 W. A. Manning; "Note on Statistical Me- 

 chanics," by E. B. Wilson ; " On certain Con- 

 stants Analogous to Fourier's Constants," by 

 C. N. Moore; "The Cologne Meeting of the 

 Deutsche Mathematiker-Vereinigung," by E. 

 G. D. Eiehardson; " Goursat's Cours d' An- 

 alyse," by W. F. Osgood ; " Shorter Notices " : 

 D'Ocagne's Calcul graphique et Nomographic 

 and Le Calcul simplifie, by L. I. Hewes; 

 Durege's Theorie der elliptischen Funiktionen, 

 by J. I. Hutchinson; Veblen and Lennes's In- 

 troduction to Infinitesimal Analysis, and 

 Hedrick's Algebra for Secondary Schools, by 

 James Pierpont; Sturm's Lehre von den 

 geometrischen Verwandtschaf ten, Erster Band, 

 and Seheibner's Beitrage zur Theorie der 

 linearen Transformationen, by Virgil Snyder; 

 Lebon's Table de Caracteristiques des Facteurs 

 premiers, by G. A. Bliss; Serret-Scheffers's 

 Lehrbuch der Differential- und Integral- 

 rechnung, by A. E. Crathorne; Blaschke's 

 Mathematische Statistik, by H. L. Eietz; 

 Fleming-Aschkinass's Elektrische Wellen- 

 Telegraphie, by E. B. Wilson. "Notes"; 

 " New Publications." 



The January number of the Bulletin con- 

 tains : " The October Meeting of the Ameri- 

 can Mathematical Society," by F. N. Cole; 

 " On the Groups Generated by two Operators 

 Satisfying the Condition s^s^^s-'s{-'," by G. 

 A. Miller ; " The Teaching of Mechanics " 

 (review of Jeans's Theoretical Mechanics), by 

 E. W. Brown ; " Economics " (review of 



