RELATION OF FOOD TO PRODUCTION 



421 



various species of animals in maintaining human life. 

 The sources of all these figures are not given, for they 

 are so numerous as to make this difficult. 



It is true, in general, that prices are proportional to 

 the cost of production. If, therefore, natural resources 

 are to be utilized for human sustenance in the most 

 efficient way and the cost of living brought to the lowest 

 possible point, the raw materials of the farm should be 

 applied to the production of those animal foods that are 

 most cheaply grown. 



The time will probably come when the relation of 

 population to land areas will be such as to make necessary 

 an application of food economics along this line. 



TABLE LXXXVIIL PRODUCTION BY FARM ANIMALS. PROPORTIONS 

 OF CARCASS AND EDIBLE SUBSTANCE 



* From Bull. No. 28, Office of Experiment Stations. Revised edition. 

 t Grown from calfhood, entire bodies analyzed. 

 j Not drawn. 

 Number of samples. 

 ! Per cent after removing shells. 

 **In eggs with shells. 



