CHEMICAL COMPOSITION. 



371 



of Agriculture) we extract the following useful and 

 instructive tables : 



*In part from Henry's "Feeds and Feeding," Appendix. 



AVERAGE PERCENTAGE OF DIGESTIBILITY OF ALFALFA AND OTHER 



FORAGE CROPS. 



(Experiments with ruminants.) 



KIND OP POEAGE. 



Fresh alfalfa. 

 Fresh clover. 

 Alfalfa hay.. 

 Clover hay. . . 

 Timothy hay. 

 Cowpea hay . 



Nitrogen-free 

 extract. 



Per cent 

 76 

 78 

 66 

 69 

 63 

 71 



Ether extract 

 (fat). 



Per cent 

 52 

 65 

 54 

 53 

 67 

 50 



The following table indicates the actual feeding value of 

 eight different kinds of feed, based on the amount of digestible 

 nutrients contained in them. These values are calculated from 

 the figures given in the table just preceding. The values per 

 pound assigned as the basis of calculation are protein, $0.0674; 

 carbohydrates (starches, etc), $0.0064; , ether extract (fats), 

 $0.0112. These figures are merely relative, as the prices of the 



