MILK AS A MARKET COMMODITY 23 



in 1900, in Milwaukee in 1903, in Boston and in Chicago 

 in 1908." l 



The first city to make pasteurization compulsory was 

 Chicago, which in August, 1908, passed an ordinance re- 

 quiring that after January I, 1909, all milk, unless from 

 tuberculin tested cows, offered for sale in the city be 

 pasteurized. 2 Since that time quite a number of other 

 cities have made pasteurization compulsory. Spargo 

 shows that pasteurization was in 1908 required or offi- 

 cially encouraged in forty-six of fifty-two leading cities of 

 the United States. He gives figures showing that in many 

 of the cities from 90 to 97 per cent of the milk supply was 

 pasteurized, and that the larger cities for the most part 

 had the greatest percentage of pasteurized milk. 



The situation as found in the cities of Wisconsin in the 

 summer of 1916 is probably more or less typical of the sit- 

 uation in other parts of the country. The following table 

 shows the extent to which pasteurization was carried on 

 in some of the cities of the state at that time. 3 



TABLE IX 



Razu and Pasteurized Milk Used in Cities of Farious Sizes in Wisconsin, igi6 



1 Parker, H. N., City Milk Supply, p. 269. 



2 Straus, Lina G., Disease in Milk, p. 70. 



3 Wis. Agr. Exp. Sta. Bui. 285, p. 8. 



