101C) KXPKKIMKNT STATION RKO>Kl>. 



weeks. Formalin was found to bean excellent preservative, but in no way superior 

 in the bichromate, which latter is considered preferable, as it colors tin- milk and is 

 alsn easilv and accurately measured. As regards the fluidity of the samples nodiffer- 

 ence was observed in favor of either preservative. both giving clear readings when 



the temperature was not too high. 



The addition of formalin to milk according to the method of von Behring, 

 o. Stknstrom (li'<r. c'n. Lait, ; (1904), No.S,pp. ;:< 55). -The publications of von 



Behring relating to the use of formalin in the preservation of the milk of cows ren- 

 dered immune to tuberculosis are reviewed and experiments are reported in which 

 formalin in the proportion of 1:10,000, 1 :5,000, ami 1 :1,000 was added t" tuberculous 

 milk to determine the influence of formalin in destroying tubercle bacilli. As shown 

 by the results of inoculation experiments with guinea pigs, the addition of formalin 

 in the proportions mentioned can not he depended upon to destroy tubercle bacilli 

 in milk. 



The reform of the milk supply, (i. F. McClearv (Public Health \ London], /; 

 (1905), No. ,'. pi'. ;/.'' 186). The author believes thai an adequate reform of the 



milk supply can be brought aboul onl\ by the extension of the principle of direct 

 municipal ownership and supply. 



A pure milk supply, A. .1. Laird t Public Health \ London'], /," | 1905), No. 7, pp. 

 ',.;; ;;;, figs. 8). The possibilitj of producing clean milk is discussed and illustra- 

 tions are given of a number of cow sheds, the unsanitary condition of which is com- 

 mented upon. 



The dangers of faultily constructed milk shops, \V. Robertson ( Public 

 Health [London], i: (1905), So, 7, pp. /'/'•> 151, figs. .'). — In discussing this subject 

 the author gives a brief account of an outbreak of scarlet fever traceable to what is 

 considered a poorly arranged dairy. 



Significance and production of Walker-Gordon milk, 1. < >. Johnson (Ann. 

 Rpt. Michigan Acad.Sci.,6{ 1904), pp. 181 184). A brief history of the Walker-Gordon 

 establishments with the rules governing them. 



Infantile mortality and infants' milk depots, <!. F. McCleary ( London: /'. X. 

 King A- Son, 1905, p. 185; rev. in Public Health [London], r. (1905), No. 7, pp. ;;•>', 

 ;; ; ). — This is said to contain an account of the history and practical working of the 

 milk depots in England. 



New physical-chemical methods of milk analysis. Distinction between 

 physiological and pathological cows' milk, ('. Schnorf (Neue physikalisch- 

 chemisch Untersuchungen der Milch. Unterscheidung physiologischer und pathologischer 

 Kuh-Milch. Zurich, 1905; rev. in Rev. Gen. Lait, } (1905), No. .'', pp. 210,211).— 

 The author has investigated certain methods with a view of determining the sanitary 

 condition of milk. Determinations of the index of refraction, freezing point, and 



electric conductivity were made on about 4,000 samples of normal milk, colostrum, 

 and pathological milk. The methods as used are described and the results are 

 reported in tabular form. By means of the 3 methods mentioned it is considered 

 possible to obtain some information as to the health of dairy animals and especially 

 the conditions of the organs concerned in milk secretion. 



Further investigations on the refraction of milk serum, .1. Wittmann 

 ( Osterr. Molt. Tig., W \ 1905), No. 6, /'/>. 75 -77).- Determinations of the index of refrac- 

 tion of the milk of healthy and diseased cows failed to convince the author that this 

 method can he depended upon. Very often the milk of healthy ami tuherculous 

 cows gave the same results. For the detection of the addition of water to milk this 

 method is believed to he useful only in connection with other data. An editorial 



note is appended to this article in which results up to (he present time are briefly 



reviewed, the conclusion being drawn that this method is not absolutely a sate 

 means of detecting the milk of diseased animals. 



