THE RELATION OF MICROORGANISMS TO MILK 



469 



they fall into the milk pail at milking time. The return of milk bottles 

 from the sick room sometimes is the means of infecting the milk supply. 



600 

 80 

 60 

 40 

 20 



500 

 80 

 60 

 40 

 20 



400 

 60 

 60 

 40 

 20 



300 

 80 

 60 

 40 

 20 



200 

 80 



60 

 40 



20 

 I QQ 



Jan. 



\ 



Feb. 



V 



^/ 



Mar 



A 



N 



Apr. 



-\ 



\ 



May 



Jun 



July. 



A 



Aug. 



5 



Sep 



t 



Oct. 



\ 



A 



\ 



T 



-\ 



NOV. 



\ 



V 



Dec. 



600 



80 



60 



40 



20 



500 

 80 

 60 

 40 



20 



400 



80 



60 



40 



20' 



300 



80 



60 



40 



20 



200 



80 



60 



40 



20 



100 



FIG. 145. 



Unfortunately the specific organisms of these diseases grow readily 

 in milk and a small infection is all that is necessary to render the 

 milk dangerous by the time it reaches the consumer. 



