METABOLISM 



From the foregoing figures the following table of the general metabolism 

 *s made: 



From Lusk's "Nutrition." 



From the foregoing table it will be readily observed that with each sus- 

 :eeding day there was metabolized as the result of activity and for purposes 

 >f heat-production a certain quantity of protein and fat which on the 

 ifth day amounted to 71.7 grams and iSi.2 1 grams, respectively, yielding 

 '.ogether 1970.8 Calories. 



In prolonged starvation the metabolism of protein and fat continues 

 ;hough in diminishing amounts until both reach the minimum just^ previous 

 ;o death, which for the protein is about 18 or 20 grams. The minimum for 

 :he fat at this period depends on the amount of fat in the body prior to the 

 starvation period. 



During the course of the starvation there is a corresponding decline in 

 the body weight. Coincidently certain disorders of nutrition arise. ^ (For 

 further particulars regarding starvation metabolism, the loss^of weight of 

 different tissues and the post-mortem appearance the reader is referred to 

 pages 128 and 129.) 



THE METABOLISM OF THE BODY ON A MIXED DIET 



As an illustration of the result of a metabolism experiment on a mixed 

 diet the following experiment of Pettenkofer and Voit may be cited, 

 subject was a man, weighing 70 kilograms and at rest. 



On a mixed diet the materials under outcome were collected; i >m 

 their amounts it was calculated that the body had received the amounts 

 the food principles under income. 



COMPARISON OF THE INCOME AND OUTCOME^ 



It will be observed that the body was in nitrogenous equilibrium, hat 

 it stored up 39.7 grams of carbon equivalent to 52 grams of fat, a 

 it eliminated 174 more grams of water than were consul 



> The fat is calculated from the carbon remaining after deducting ; th< > carbon denved 

 the protein which is equal to 3.28 grams for each gram of nitrogen ehr 



