MICRO-ORGANISMS IN MILK 



319 



found 442,000 bacteria per cubic centimeter in 100 c.c. of wash- 

 water, but in cans that were washed with tepid water and then 



iig. 144. — Standard twelve-bottle filter. 



Fig. 145. — Davis' standard combined filler and capper. 



scalded the number was reduced to 54,000. Careful washing and 

 subsequent steaming for five minutes caused a further reduction 

 in germ content to 880 per cubic centimeter. 



