90 



Mill' and Its Products. 



These results were abundantly confirmed by a sim- 

 ilar series made by Dean in Canada''^. 



The removal of the covers of the cans in the 

 dusty and dirty streets always results in considerable 

 contamination of the milk, hence the practice of 

 putting the milk into bottles upon 

 the farm, and delivering these bot- 

 tles intact to the consumer, has 

 rapidlj- increased since its introduc- 

 tion, some ten years ago. When 

 the bottles are used, the milk should 

 be put into them as soon as it is 

 drawn, strained and cooled ; they 

 should then be sealed and kept in a 

 cool place until ready for delivery. 

 This method of delivery, although 

 it entails a greater expense in outfit 

 and transportation and a consider- 

 able loss from breakage, is much to 

 be preferred to the old manner. 

 Milk so handled, and kept at a 



Fig. 9. "Common , . -, , , _o -, -^o 



seuse" milk shipping tcmpcraturc oetweeu 4o and ou 

 F., should be in good condition 

 sixty hours after it is drawn. Its life can be pro- 

 longed by pasteurization, and the liability to trans- 

 mission of diseases through the milk at the same 

 time reduced to a minimum, but whether pasteuriza- 

 tion should be relied upon for these purposes is 

 still somewhat of an open question. In so far as 

 immunity from diseases which may be present in the 



* Ontario Agricultural College, Bulletin No. 66. 



