1 68 SCIENCE AND PRACTICE OF CHEESE-MAKING 



statement in regard to the influence of turning cows 

 from barn into pasture about the middle of May : 



It is seen that under the conditions indicated, 

 the fat and casein maintain a relation that is very 

 uniform. 



Turning now to data obtained during a summer 

 when extreme drouth prevailed during part of July 

 and all of August, we have the following results : 



EFFECT OF DROUTH UPON RELATION OF FAT TO CASEIN 

 IN MILK 



These .results show, for cheese-factory milks, an 

 abnormal ratio of fat and casein in July, which was 

 still further from normal in August. In Septem- 

 ber, when abundant rains came and when, in addi- 

 tion, dairymen had fodder corn to supplement 

 pastures with, the ratio became more nearly nor- 

 mal and still more so in October. From the stand- 

 point of practical application, these facts indicate 



