108 



THE CHEMISTRY OP THE FARM 



Down sheep analysed at Kothamsted contained about 

 6"5 per cent, of nitrogen, and yielded 2—3 per cent, of 

 ash. 



ASH CONSTITUENTS AND NITROGEN IN 1,000 POUNDS OF 

 VARIOUS ANIMALS AND THEIR PRODUCTS.' 



If we assume a cow to yield 600 gallons of milk in 

 the year, and the milk to be sold, the loss to the farm 

 will be about 36 lbs. of nitrogen, 12 lbs. of phosphoric 

 acid, and 10 lbs. of potash. If the milk is made into 



' The constituents of animals are reckoned in this table on a fasted 

 live weight, including contents of stomachs and intestines. 



