204 



MASS. EXPERIMENT STATION BULLETIN 18/ 



can scarcely be made from pathogenesis alone, if present knowledge has 

 any weight. More may be said concerning this later, in connection with 

 some evidence which the authors may wish to furnish. 



A table furnished by W. A. Stocking^ illustrates results commonly 

 obtained with commercial milk. 



Table XXXII. — Effect of a Centrifugal Clarijjer upon the Germ-content 

 of Milk (Stocking). 



The seemingly universal increase given by Stocking is not "borne out 

 by other workers who furnish extended studies. The explanation for 

 this may be found in the character of the milk used. 



Parker quotes the findings of the Biochemical Laboratory of Boston.- 



1 Marshall, C. E.: Microbiology, 1917, p. 390. 



2 Parker, H. N.: The City Milk Supply, pp. 257, 258. 



