980 EXPERIMENT STATION RECORD, 



tiou of acid in cultim'S. Tlie viscid PiiV)stanc(> soluble in water from which it 

 is precipitated hy alcohol reduces Fehling's solution. 



The relative opsonic power of the mother's blood serum and milk, Iv 

 TuRTON and U. Appi.eton (Brit. Med. Jour.. l'.)01. No. 241^, P- 865). — Cow's 

 blood serum was found to have about one-half the opsonic power of human 

 blood, the average for 3 cows being 0.4!) for the tubercle bacillus and 0.71 for 

 the Staitln/locuccus pyogenes aureus. The inde.x of the milk of the 3 cows aver- 

 aged about 0.25 for the tubercle bacillus and 0.18 for the staphylococcus. Ordi- 

 nary market milk averaged 0.20 and O.O.'), respectively, for the same organisms. 



Milk and milk adulteration, A. J. J. V.\xueveli)e {(IJicnf: A. ."differ, JflOl. 

 PI), lit)). — This manual is written with the view of defining public responsi- 

 bility in the matter of the production, liaudling, and sale of milk. Chapters 

 are devoted to the composition of milk, caus;>s of changes in the composition 

 and properties of milk, nutritive value cf milk, adulteration of milk, legislation 

 relating to milk control in different countries, methods of analysis, the decom- 

 position of milk, milk preservation, milk prodiicts, and a general discussion of 

 the public duties and responsibilities of the producer, dealer, and consumer of 

 milk, and also of public officials conceimed. 



Clean milk for New York City {Rpt. N. Y. Milk Conf., 1906, pp. 86'),— In a 

 conference held in New York City in November, 190G, the following subjects 

 i-elating primarily to the milk supply of New York City were discussed by 

 numerous speakers: Skim milk, pasteurization, infants' milk depots, model milk 

 shops, inspection, legislation, and education. 



The Danish pasteurization law {M<rJkerili(l.. 1!) (I'JOV,). A'o. //6", pp. 967- 

 919; I (icshr. L(iii<liii.. .13 (1906). pp. T-T//, 7.>.7). — This is a report of the chem- 

 ical department of the Copenhagen F^xperinient Station on the operaticms of the 

 Danish law of February 5, 1904, directing tlr,' pasteurization of skim milk, 

 buttermilk, and cream in creameries for the combating of tuberculosis in cattle 

 and swine. 



The report shows that 1.328 creameries were inspected during the year 

 1905-6 in accordance with the provisions of the law. Of the G.SOl samples of 

 skim milk and G,830 of buttermilk and cream taken by the authorities. 225, or 

 3.3 per cent, of the former, and 1G8. or 2.4 per cent, of the latter were found 

 insufficiently heated. One thousand and seven creameries conformed to the 

 provisions of the law, while 2r(2 violated it through negligence or lack of care in 

 the pasteurization of their products and paid the penalties imposed upon them 

 by the courts. — f. w. worj>. 



The sterilization of milk; its sanitary necessity and practical realization, 

 A. VoiGT {Tiicsis, Lcipsic. l!Hl(>; abs. in lli/i/. Maude el Lait. 1 (1907), No. 3, p. 

 122). 



The sanitary control of the production and sale of milk in the United 

 States, L. I'a.msskt (////(/. Maude ef Lait, 1 {1907), No. 2, pp. Ji9-.')3). — A brief 

 general discussion of this subject. 



The preservation of milk from a physiological standpoint, G. Wulff 

 (Aljx. //.' ('h( lu. Zeutl)!.. 1 (1907), No. 13, p. 9H1). — The author coiacludes from 

 the results of his investigations that hydrogen peroxid added to milk not only 

 exerts a bactericidal action, but also produces certain changes in the proteids 

 of the milk. 



The volatile water-soluble fatty acids in East Prussian dairy butter, 

 RuscHE (Molk. Ztij., 21 (1907), Nos. 11. pp. 269, 270: 12, pp. 299-302).— The 

 results of the examinati(m of butter from 7 dairies in East Prussia from 

 August. 1905. to July. 190G. are reported. The cows were fed in the stable dur- 



