- 548 - 



this it must be noted that there is always more risk in using rich 

 milk, that greater care is required in the making, as well as 

 more salt. 



That the use of the acidimeter is to be recommended. 



* 

 J. A. MANDEL. Analysis of the Cleavage products of the 



Nucieoprotein of the Mammary glands. (Proc. Soc. Expt. 



Biol. and Med., 7, 1909, No 2, pp. 24-26); E. S. R., Abstr. N. 5. 



The author finds a close correspondence between casein and 

 the nucleoprotein of the cells in the mammary gland, which he 

 thinks is strong proof that the casein of the milk is formed by a 

 breaking down of the nucleoprotein of the protoplasm, with a setting- 

 free of the carbohydrates and the purin and pyrimidin bases. 



R. T. HEWLETT, S. VILLAR, C. REVIS. On the Nature of the Cel- 

 lular Elements present in Milk. (Jour. Hyg. (Cambridge) 9 

 (1909), no. 3, pp. 271-278). -- E. S. R. March, 1910. Wa- 

 shington. 



A review of investigations and theories on the cellular structure 

 of the udder, the formation of milk in the udder, and the nature 

 of the cellular elements found in milk. 



The authors agree with Winkler, and Michaelis that the cells 

 found in normal milk are not leucocytes but young epithelial cells 

 and cells of the germinal layer which have been thrust into the 

 lumen of the alveolus. They are not amoeboid, do not ingest bac- 

 teria, and do not stain like leucocytes. The [majority of the multi- 

 nucleated cells are different from the polymorphonuclear leuco- 

 cytes. Leucocytes and lymphocytes do appear in the milk, however, 

 in the advanced stages of mastitis. 



R. HEWLETT TANNER and SIDNEY VILLAR. The Cellular Elements 

 of Milk. The Dairy, Vol. XXII, No. 259, p. 183. London, 

 July 1 5th, 1910. 



A joint preliminary report of an "Investigation into the Cel- 

 lular Elements present in Milk" has been issued by the authors at 

 the instance of the British Dairy Farmer's Association, that resum- 

 ing others. The authors' observations conclude: 



i. The vast majority of the cells present in milk (the so-called 

 leucocytes) when critically examined distinctly differ from leucocytes. 



