METHODS OF REDUCING THE GERM CONTENT 



537 



Steenbock have proved that they are not destroyed by pasteuriza- 

 tion. 



Cow's milk was never intended by nature for human con- 

 sumption. If man decides to use an alien milk which is drawn 

 and handled under conditions of his own making, he cannot ex- 

 pect it to be in the same condition as when it is consumed in na- 

 ture's fashion directly from the udder. Man must use means of 

 self-protection under the circumstances. Pasteurization may not 

 be the ideal remedy, but ideal raw milk is so far removed from 



TIME. AND TE.MPE.RATURE. FOR 

 MILK PASTEURIZATION. 



20' 3ff 



Tl ME. IN MINUTED 



Fig. 218. Showing the effect of the temperature and holding period of pas- 

 teurization on enzyms and some of the important pathogenic bacteria. 



realization under present conditions that a remedy like pasteuriza- 

 tion is not only advisable, but becomes a necessity. If some of 

 those whose duty it is to control the process in the interest of 

 public safety do not fulfil their duty properly there will be less 

 harm done than if a similar class of inspectors of raw milk produc- 

 tion has to be depended upon. 



Dealers have sometimes objected to the increased cost of 

 production occasioned by pasteurizing their product. Bowen, 

 who has thoroughly investigated this point, has stated that it 



