ANIMAL PRODUCTION. 563 



designed to study the fat content of blood in its possilile relation to the metabo- 

 lism of fat. The experimental procedure consisted in feeding fat, intravenous 

 injection of various fat preparations, fasting for a short period, and narcosis. 



It was found that feeding fat in the ordinary way caused an increase in the 

 fat content of the blood, beginning in about one hour after feeding and reaching 

 a maximum in about six hours. In the author's opinion the data indicate that 

 "fat may be stored in two ways, (1) a temporary storage where the fat may 

 be quickly but loosely stored and whose capacity is limited, and (2) the per- 

 manent fat deposits which take up fat slowly and release it slowly." 



Studies on blood fat. — II, Fat absorption and the blood lipoids, W. R. 

 Bloor {Jour. Biol. Chcm., 23 {1915), No. 1, pp. 317-326). — Feeding experiments 

 with laboratory animals (dogs) are reported which were conducted to deter- 

 mine the mechanism of fat absorption in its relation to the composition of the 

 blood and as a preliminary step in the study of fat metabolism. At intervals 

 after the animals received a feeding of fat, samples of the blood were analyzed 

 for total fat, cholesterol, and lecithin. The data are discussed in comparison 

 with the results obtained by other investigators, but no definite conclusions are 

 drawn. 



Text-book of physiological chemistry. — II, The function of the inorganic 

 nutrients in cell metabolism. — Ferments. — Total metabolism, E. Abder- 

 HALDEN {Lchrbtich der physiologischen Chemie. — //, Die anorganischen Nah- 

 rungsstoffe. — Die Bedeuhmg des z,ustandes der Bestandteile der sellen fiir 

 Hire funJctionen. — Fermente. — Oesamtstoffiveehsel. Berlin and Vienna: TJrhan 

 and Schwarzenberg, 1915, vol. 2, 3. ed., pp. rrn+1552, figs. 28).— This part of 

 the publication considers the mineral constituents of the diet and their rela- 

 tionship to life proces.ses. The ferments and their relation to digestion and 

 other life processes are also taken up at length and several chapters are devoted 

 to a discussion of metabolism in its various aspects. The first part of the 

 publication has been previously noted (E. S. R., 31, p. 361). 



Carbohydrate indig-estion, W. Tileston {Jour. Amer. Med. Assoc, 65 {1915), 

 No. 26, pp. 2214-2216). — The author cites several clinical ca.ses of carbohydrate 

 indigestion which responded readily to a proper regulation of the diet. The 

 symptoms are described as well as the dietary conditions usually associated 

 with this disturbance. 



Food poisoning by the Bacillus paratyphosus B — an epidemic due to the 

 organism, isolated from pie, H. S. Bernstein and E. S. Fish {Jour. Amer. 

 Med. Assoc., 66 {1916), No. 3, pp. 167-171).— This article reports in detail the 

 results of an investigation of an epidemic of food poisoning in which the num- 

 ber of cases was estimated at 60, of which 4 terminated fatally. 



It was found that all of the persons attacked had eaten pie from the same 

 bakery. Clinical investigation showed the disease to be the result of an infec- 

 tion of Bacillus paratyphosus B, and in the laboratory examinations of several 

 samples of the pie this bacillus was isolated. References to a number of cases of 

 food poisoning by B. paratyphosus B are given, and the authors emphasize the 

 importance of protecting food supplies from infection by disease carriers. 



ANIMAL PEODTJCTION. 



Modes of research in genetics, R. Pearl {Nero York: The Macmillan Co., 

 1915, pp. VII-\-182, figs. 2). — The chapters included in this book take up, re.spec- 

 tively, a critical examination of current modes of research in genetics ; bio- 

 metric ideas and methods in biologj', their significance and limitations ; the 

 nature of statistical knowledge ; certain logical and mathematical aspects of 

 the problem of inbreeding ; and genetics and breeding. 



