GREEN FODDER-CORN, ETC. 



15 



In the following tables, cows I. and II. form herd No. 1 ; 

 cows III. and IV., herd No. 2. The analytical results given 

 below are averages drawn from the daily determinations of 

 the milk of five consecutive days in each period. 



As cows advance in their periods of lactation, the per cent 

 of solid matter in tlieir milk gradually increases, while the 

 yield of milk, as is well known, decreases. A second table 

 is therefore given, in which the absolute amounts of butter, 

 proteine, etc., yielded by each herd during each period, are 

 compared. 



