METABOLISM. 493 



oxygen. ~The extractives in the organs without fat are increased by 

 thirst. 



An Example of Nitrogen Equilibrium Without Carbon 

 Equilibrium (Arthus.) 



Ingest a. 



N. C. 



137 gr. proteids 19.5 



117 gr. fats j- 315.5 



352 gr. carbohydrates 



19.5 A 



o 



o J 



19.5 315.5 

 Enesta. 



N. C. 



Urine 17.4 12.6 



F*ces 2.1 14.5 



Respiration , . 248.6 



19.5 275.7 



An Example of Nitrogen and Carbon Equilibrium (Arthus.) 



Jnqesta. 



N. C. 



100 grams proteids 15.5 53.0 



100 grams fats 79.0 



250 grams carbohydrates 93.0 



15.5 225.0 

 Eqesta. 



N. C. 



Urine 14.4 6.16 



FtEces 1.1 10.84 



Respiration 208.00 



15.5 225.00 



In an animal receiving an excess of carbon and nitrogen up to the 

 point that catabolism equals anabolism, there is a greater deposit of 

 both in the body the greater the amount of food given. There is thus 

 a remarkable adaptation of the body to the diet which it receives, and 

 the more or less rapid realization of the nitrogen and carbon 

 equilibrium. 



Example of a Metabolism Experiment, taken from Atwater. 



The following table after Atwater contains a summary of the 

 ingesta and excreta in an experiment with mixed food. The experi- 

 ment lasted four days., the subject being a man thirty-two years of age 

 and of about 64 kilograms body- weight, who remained as quiet as 

 possible throughout the experiment. 



