MICRO-ORGANISMS IN MILK 



317 



attention, since they are difficult to reach. In all such places 

 bacteria may multiply at a great rate if remnants of milk remain. 



Fig. 139. The Beverly double strainer. Fig. 140. Cuppel sanitary strainer. 

 (A. H. Barber Creamery Supply Co.) 



Fig. 141. Davis' milk and cream cooler. 



Russell found that when a pail was sterilized the germ con- 

 tent of the milk was 165 per cubic centimeter, while in a pail not 

 sterilized the number was 4265. Lohnis and Kuntze counted in 



