464 PHYSIOLOGICAL CHEMISTRY, 



lation. The various views in regard to the importance of the 

 carbohydrates in the formation of fat which have been suggested 

 from time to time have been given on page 249, and it is there 

 stated that, according to the present view, the carbohydrates not 

 only spare the fat, but may also be converted into fat in the body. 



The very important question as to the conditions for the depo- 

 sition of fat and flesh in the body, stands in close relation to what 

 has just been said in regard to food consisting of proteids and 

 carbohydrates. 



In the previous pages it was repeatedly stated that an exclusive 

 diet rich in proteids causes an increased destruction of proteids, and 

 that such a diet soon produces a nitrogenous equilibrium. By the 

 exclusive increased administration of proteids the proteid condition 

 of the body may be increased only for a short time and to a small 

 extent, and this only when the body was previously proportionally 

 well fed. This does not occur in bodies poor in fat from disease or 

 from some other cause. If we wish to cause a deposition of pro- 

 teids in the body, then we must administer in sufficient amounts 

 with the food, besides proteids, also other bodies which will spare 

 the proteids, such as gelatine, fat, or carbohydrates^ and indeed, for 

 several reasons, chiefly fat and carbohydrates. 



It has also been previously stated that, because of the property 

 of the proteids to raise the proteid metabolism, an accumulation of 

 proteids may be caused more economically and better with a medium 

 amount of proteids and proportionally more non-nitrogen ized sub- 

 stances than with a greater amount of proteids and proportionally 

 less non-nitrogenized bodies. Above all, such a proper relation 

 between proteids and non-nitrogenized bodies is important when we 

 aim at keeping the deposit of flesh for a longer time. The follow- 

 ing extracts from VOIT'S tables are instructive in this regard : 



TABLE XII. 



Number of Days F od ' Total Deposit of Nitrogenous 



of Experimentation. ' Meat> grms< Fat> gr m "^ Flesh, grms. Equilibrium. 



32 500 250 1794 not yet 



3 750 250 271 near 



3 1000 250 375 



4 1500 250 476 



7 1800 250 854 nitrogenous equilibrium 



3 2000 250 352 near 



