THE BACTERIA FOUND IN MILK 41 



gramme of moist excreta were recorded. It is also commonly 

 present in dust. 



Its essential characters, as described by Klein, 1 are given 

 in the following table : 



The virulence of this organism is subject to considerable 

 variation. When fully virulent 1 c.c. of the whey from a 



1 Report of Medical Officer, Local Government Board, 1901-2, p. 404. 



