COMPOSITION TABLES 345 



The tables showing the average fertilizer ingre- 

 dients of fodders and feeds are also subject to the 

 same criticism, although not to the same degree. 



These data are of special service, in the case 

 of farm crops, in showing the relations between 

 the different classes, and, in the case of fine feeds 

 (which are not forage-crop products) , in indicat- 

 ing the gains or losses that may be incurred in 

 the exchange of home-grown herbage feeds for 

 the more concentrated refuse or by-products. 



The average coefficients of digestibility are also 

 subject to variations, as must be apparent to 

 those who give the matter consideration. They 

 are to be used as guides only, and not as absolute 

 facts. 



The data contained in these various tables 

 have been derived from a number of sources, but 

 mainly from tabulations of analyses made by the 

 various experiment stations of this country. The 

 coefficients of digestibility are the averages of 

 American digestion experiments contained in the 

 report of the Hatch Experiment Station of Massa- 

 chusetts, for 1906. 



PLAN OF TABLES I AND H 



1. Green fodder, pp. 347, 358. 



A. Cereals and grasses. 



B. Legumes. 



C. Combination crops. 

 J>. Miscellaneous. 



