THE NEW EARTH 



of energy or force and no particle of matter 

 is lost under any circumstances, it is all 

 accounted for, one of the significant scientific 

 demonstrations of recent years. 



At the Pennsylvania Experiment Station, 

 a similar series of experiments has been under 

 way with cattle kept in a larger compartment, 

 but managed in the same general way. The 

 results have been of much interest and value 

 in the determination of the relative impor- 

 tance of stock foods. 



While food investigations have been carried 

 on in a more or less primitive way for the last 

 seventy-five years in Europe, and for a lesser 

 period in the United States, it is only within 

 recent years that important work like this has 

 been undertaken. Professor Atwater notes the 

 fact that the chemical substances of which 

 the body is composed are very similar to those 

 of the foods which nourish the body. Here, 

 again, the man of the New Earth may discover 

 a remarkable likeness between himself and the 

 raw material which he provides for the support 

 of the race, just as he could discover marked 

 likenesses between himself and the plant-life 

 about him. Four compounds at least are in- 



262 



