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.) 





~''*m'mmmi*^. 



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 



