780 



EXPERIMENT STATION RECORD. 



[Vol. 3S 



The results indicate that the stimulation necessary for normal milk secretion 

 Is of varied origin, and that the irritation produced by the hand and by the 

 calf's sucking causes a change in the composition of the milk. Hand milking 

 appears to be more stimulating to milk secretion than machine milking. It is 

 noted that the leucocytes increase in the milk during milking. 



Gradual conversion of colostrum into normal milk {Osterr. Molk. Ztg., 24 

 {1917), No. 14, p. 129; abs. in Intermit. Inst. Agr. [Rome'i, Internat. Rev. Sci. 

 and Pract. Agr., 8 {1911), No. 10, pp. ISIS, 1379).— A series of analyses of the 

 colostrum of milch cows was made at the Station for Milk Control at Mem- 

 mingen, Bavaria, during 191G. Some of the results of these analyses are given 

 in the following table : 



Results of analyses of colostrum. 



The results indicate that, while milk may become practically normal as 

 early as the fifth day, the acidity only becomes normal on the tenth. The 

 relation between casein and albumin and the results of fermentation experi- 

 ments indicate that the milk is not capable of caseification before the tenth 

 day. Until the fourteenth day milk that is 'not fresh adheres to cooking ves- 

 sels and acquires a burnt flavor. 



The analysis of milk secreted by a suckling doe kid, R. L. Hill {,Jour. 

 Biol. Chem., S3 {1918). No. 3, pp. 391-S9S).— The author, at the Maryland Ex- 

 periment Station, reports chemical analyses of milk secreted spontaneously by 

 a 4-months-old virgin doe kid. 



The milk had the characteristics, properties, and chemical composition of the 

 milk secreted by the kid's mother and other goats. Since no colostrum was 

 secreted, the inference is that the " secretion of colostrum is associated with 

 and possibly is produced by the cessation of pregnancy, and may not occur in 

 lactation not associated with pregnancy." 



Report of the Mayor's Committee on Milk, City of New York, 1917, 

 C. E. NoKTH {Town [Baltimore], 3 {1918), No. 19, Sup., pp. 2-6). —This article 

 contains extracts from the report of the committee on milk. The conclusions 

 from the report are as follows : 



"(1) Milk is the most valuable and the cheapest of human foods, even at 

 present prices. (2) For drinking purposes New York City now uses only about 

 700,000 qts. daily. The city should use about 2,000,000 qts. daily for drinking 

 in an ideal diet. (3) The cost of milk production at present prices is 7 cts. 

 per quart, and the prices asked by the Dairymen's League are .lustified. 

 (4) The cost of distribution, as shown by the dealers' accounts, is justified, and 

 not large enough to prevent business losses. (5) The cost of production can 



