20 



THE DAIRY OF THE FARM. 



first week, 5 cows were observed, during the second, 7 cows, 



and during the others 6. 



The richness of the milk increases, as its quantity 

 diminishes. This indeed appears to have had a more 

 powerful influence than the varying character of the food. 

 The ration of mangold leaves proved, however, an exception 

 to this rule. The following is another series of weekly 

 experiments lasting over several months. In the first week, 

 the numher of cows observed was 7, and in the others 12. 



