SELECTING THE BREED 



77 



butter fat per breed. The data for per cent, of but- 

 ter fat in the table which follows includes tests of 

 the milk of 1,974 cows and the data for milk yield 

 includes tests of 1,510 cows. 



This summary includes a large number of Euro- 

 pean analyses of milk, especially of milk from Short- 

 horn, Jersey, and Holstein cows, and it may there- 

 fore be argued that the results do not fairly repre- 

 sent the quality and yield of milk produced by 

 American cows of the respective breeds. To over- 

 come this criticism all available analyses of milk pro- 

 duced by purebred American dairy cows were com- 

 piled and the results of this second summarization 

 are shown in the following table, which includes data 

 for 881 cows as regards the fat content of the milk 

 and for the average milk yield of 825 cows : 



Summary of American Analyses of Samples of Milk from 

 Purebred Cows (Woll) 



If the results are arranged in the order of the aver- 



