46 FlsJier — The Effect of Diet on Endurance. 



api»lication of the theories of Folin' that we usually cany a reservoir 

 of proteid, enough to supply our needs for body-building for a fort- 

 night. If this reservoir is exhausted, proteid starvation occurs and 

 the body feeds on itself ; if it is filled too far it overflows and causes 

 the evils of excessive proteid. If this theory is correct, the art of 

 eating may consist largely in maintaining a golden mean such that 

 the proteid reservoir is neither empty nor overflowing, or at any rate, 

 not overflowing much. Many persons fear to reduce their proteid to 

 the Chittenden minimum for fear of proteid starvation ; but the 

 experience of those who have tried it would seem to show that this 

 fear is groundless, provided no violence is done to natural appetite. 

 This ma}^ be trusted, so it would appear, to raise a warning in the 

 form of " nitrogen hunger " before the danger point is reached. 



'"A Theory of Protein Metabolism." American Journal of Physiology, March, 

 1905. 



