396 expp:riment station record. 



the Chicago and St. Louis expositions and the results of some experiment station 

 work in this country and of investigations in Belgium, the author concludes that the 

 productive capacity of cows as regards yield of milk and butter may be increased by 

 suitable feeding, though the percentage of fat in the milk remains practically 

 unchanged. 



On the influence of asparagin on the production of milk and its con- 

 stituents, T. Pfeiffer, A. Einecke, and W. Schneider (Mitt. Landw. Inst. Breslau, 

 3 (1905), No. 2, pp. 179-225). — In experiments with 6 goats lasting 2 years, the sub- 

 stitution, in quantities having equal fuel value, of a mixture of asparagin and cane 

 sugar for a part of the proteids in a ration moderately rich in protein produced (1) 

 no decrease in the yield of milk, but an increase in individual instances; (2) a lower- 

 ing of the percentages of fat, proteids, and total solids in the milk; (3) a distinct reduc- 

 tion in the actual yield of fat; (4) unessential variations in the actual amount of 

 proteids produced, and (5) an unfavorable influence on the increase in live weight 

 of the animals. 



Asparagin or the amids in general are, therefore, according to the authors, to be 

 stricken from the list of nutrients. In rations very rich in food constituents the 

 amids on the contrary are able, on account of their irritating or stimulating actions, 

 as yet not satisfactorily explained, to exert a favorable influence on milk secretion, 

 but always at the expense of other food constituents or body tissues. 



Daily variations in the fat content of milk, M. Siegfeld (Molk. Ztg., 19 (1905), 

 No. 38, pp. 975-978). — The mixed milk of each of 14 dairy herds was tested daily for 

 1 year. < Data are presented showing variations in fat content for short and long 

 periods and causes of these variations are discussed. The fat content of the mixed 

 milk of 1 herd milked 3 times daily was 2.91 per cent in the morning, 3.53 per cent 

 at noon, and 3.18 per cent in the evening. In another instance the percentages were, 

 respectively, 2.56, 3.65, and 3.10. 



Variations in the yield and fat content of milk during- one year, Harxoth 

 (Molk. Ztg., 19 (1905), No. 28, pp. 712-7 14)-— Records of 20 dairy herds are sum- 

 marized and used in this discussion of the causes and extent of variation in the yield 

 and fat content of milk. The average fat content for the year was 3.24 per cent. 

 Monthly variations ranged from 3.13 to 3.39 per cent. 



On the origin of lactose, C. Porcher ( Compt. Rend. Acad. Sti. [Paris], 141 ( 1905), 

 No. 10, pp. 467-469). — In studying the source of lactose in milk the author made 

 hypodermic, intraperitoneal, and intramammary injections of glucose, using for this 

 purpose cows, goats, and dogs in full lactation. Hyperglycemia under such condi- 

 tions tended to produce lactosuria instead of glycosuria. 



On the agricultural production of milk for infants, P. Diffloth (Indus. 

 Lait. Beige, 6 (1905), No. 37, pp. ^89-293).— The suitability of various feeding stuffs 

 for cows used in the production of milk for infants is discussed. 



Principles and experiences in the preparation of milk for infants, Back- 

 haus (Munchen. Med. Wchnschr., 52 (1905), No. 39, pp. 1883-1885).— The author for 

 years has advocated in infant feeding the so-called aseptic milking, the modification 

 of the milk in suitable establishments rather than in homes, bottling, and steril- 

 ization, and in this article outlines the methods employed and comments on the 

 good results obtained. 



A discussion on infant milk depots, B. W. F. Axdersox, N. Straus, et al. 

 (Brit. Med. Jour., 1905, No. 2333, pp. 643-647) .—This is a presentation of the work 

 being done in Glasgow, New York City, and other places in furnishing a wholesome 

 milk supply for feeding the children of the poor. The report on the Straus depots 

 in New York is especially full. 



The nutritive value of sterilized cow's milk, R. Brunox (Bui. Acad. Med. 

 [Paris'], 3. ser., 53 (1905), No. 16, pp. .196-399).— During 4* years the infant milk 

 depot in Rouen, known as the Goutte de Lait. distributed 223,000 liters of sterilized 



