2Q4 



AGRICULTURAL PRODUCTS. 



[VUI. 



The white cow gave, on an average, in 24 hours, 12,500 grm. 

 milk ; the red cow, 10,250 grm. Both cows were usually 

 milked at 6 a. m., 12 m., and 6 p. M. It appears from the 

 above, that the fat on the milk behaves in the udder as in any 

 quiet vessel, for the last portions are generally richer than the 

 first. But this only occurs when it remains more than 4 

 hours ; for if it be drawn off every 2 hours, it is uniform. 

 The milk obtained from cows which are kept on the grass, is 

 decidedly richer than that obtained from such as are stalled 

 at night without feed. 



The differences observed above in the milk seem only to 

 affect the fat ; for that portion of the residue insoluble in 

 ether, as well as the nitrogen and ashes of this portion, are 

 almost constant, as shown by the following table. The num- 

 bers in the first column will be found in the preceding table, 

 the first of each pair being the residue from the first portions, 

 milked, the second from the last, with their respective quantities 

 soluble in ether (fat, &c.), and insoluble (casein, &c.). 



