600 EXPERIMENT STATION RECORD. 



with remu't also varied with the degrt-o of heut I'lnjiloyed. (lenerally speaking, the 

 higher the temperature the slower the rate of coagulation. 



As shown hy artifirial digestion experiments, the different milk preparations 

 varied little in digestibility, condensed milks being somewhat less thoroughly 

 digi'sted than tlu' bottled goods. It was noted that the amount of hydrochloric acid 

 used had a marked effect upon the digestibility of the sample, much more being 

 digested when 1 per cent was added than with either 0.5 or 0.25 per cent. A 

 bibliography is aj^pended. 



Holland's export meat trade, T. A. L. Beel {Ztschr. Fleich- u. Milchhyg., 13 

 {1903), Xo. 9, pp. 273, J79). —Tlw official regulations governing the export meat 

 trade are quoted. 



The sorghum beer of the Matabeles, H. Neuville {Jour. Agr. Trop., 3 {1903), 

 No. 28, pp. 296-298). — A descriptive article quoting an analysis by S. A. Pingstone. 

 Among other topics the author discusses the character of the fermentation which 

 takes place in the manufacture of sorghum beer. 



Means for the prolongation of life, H. Weber {British Med. Jour., 1903, No. 

 2240, pp. 1445-145 1). — In addition to other matters the author discusses food and 

 diet in relation to longevity. Moderation in eating and drinking is recommended, 

 especially as old age approaches. 



Observations on the digestion of proteids with papain, L. B. Mendel and 

 F. P. Underhill ( Trans. Connecticut Acad. Arts and Sci., 11 {1901-3), pt. 1, pp. 1-14)- — 

 The data reported have been noted from another publication (E. S. R., 14, p. 680). 



The value of calorimetric examination, A. Schlossmann {Berlin. Klin. 

 Wrhnschr., 50 {1903), No. 12, pp. 264, 265; ah.t. in British Med. Jour., 1903, No. 2234, 

 p. 61. ) — The importance of determining the fuel value of food and excretory products 

 for clinical purposes is fjointed out. 



The emplojrment of the Berthelot bomb calorimeter for determining the 

 existence of arsenic in the body, G. Bertrand {Ann. /».s^ Pasteur, 17 {1903), 

 No. 9, pp. 581-586). — On the basis of experiments which are reported, the author 

 recommends the determination of arsenic in the residue remaining in the bomb after 

 combustion is completed as a suitable method for estimating this element in materials 

 of animal origin. 



Phosphorus metabolism by adult man, R. Ehrstrom ( Yersmnml. Nord. 

 Naturf. ti. Aerzt., Verhandl. >%±. Anat., Physiol, u. Med. Chem., 1902, pp. 87, 88).— A. 

 brief account of an investigation included in a report noted from another publication 

 (E. S. R., 14, p. 1100). 



ANIMAL PRODUCTION. 



Concentrated feeds, C. Bohmer {Die Kraftfuttermittel. Berlin: Paul Parey, 1903, 

 pp. XII-\-650, figs. 194). — This volume, which is designed as a practical handbook, 

 takes into account the sources from which concentrated feeds are derived, their 

 method of preparation, composition, digestibility, and uses, special attention being 

 paid to the detection of adulteration and to microscopical analysis. The sections 

 into which the book is divided are cereals and milling processes; microscopical 

 examinations of feeding stuffs for the detection of adulterants and determining age; 

 cereal grains, milling products, and by-products of fermentation; leguminous seeds 

 and their liy-products; l)y-products of oil making; and meat meals and condimental 

 feeds. "Weed seeds and a number of other topics are treated of in an appendix. 



The valuation of feeding stuflfs, C. Kromphardt, G. Faye, et al. ( Ugeskr. 

 Landm., 48 {1903), No. 23, pp. 249-253). — According to the authors, the value of a 

 concentrated feed is represented by the protein multiplied by 1.5, plus the fat multi- 

 plied by 2.4, plus the nitrogen-free extract, plus 0.5 times the crude fiber, digestible 

 a«trients being considered in every case. The factor 1.5 represents the cost of nitrog- 



