CONTENTS xi 



CHAPTER IV. THE PROTEIN METABOLISM OF MANKIND Con- 

 tinued PAOES 



Nitrogenous metabolism of the Sikh - 91 



Dietary of the Sikh soldier - - 91 



Sikhs not vegetarians - - 91 

 Eighth study : Composition of Bengali and European mother's 



milk contrasted - - 92 



Bengali mother's milk deficient both in quality and quantity 93 



Average weight of new-born European and Indian infant - 94 

 Suggested influence of diet on the composition of Indian 



mother's milk - - 94 



Effects of defective nutrition on the Indian infant - - 94 



CHAPTER V. THE PROTEIN REQUIREMENTS OF MANKIND 96121 



Dietaries considered from standpoint of protein element and caloric 



value - - 96 



Loss of potential energy owing to intestinal fermentation - - 97 

 The nitrogen of the faeces a true measure of the nitrogen lost to the 



body - 99 



/ The protein requirements of the body - - 100 



Evidence afforded by the average consumption of mankind - 100 



Chittenden's criticism of this evidence - - 101 



Crichton- Browne on Chittenden's objections - - 102 



Hutchison's opinion - - 102 



Sir William Roberts's opinion - - 102 



Evidence afforded by deductions from Folin's observations on 



urinary creatinine - - 103 

 Evidence afforded by a study of the conditions that obtain 



during starvation - 104 

 The lower limits of nitrogenous equilibrium approximately 



determined - 106 



The lower limits not the most advantageous - 107 

 The increased demand for protein during severe muscular 



exertion - 107 



Paton's investigations and his conclusions - - 108 



The role of protein in muscle work discussed - 109 



Stewart's opinion - 110 



What the ordinary level of protein interchange really 



amounts to - 112 



The only way of arriving at the true protein needs of the body - 113 

 Results obtained from man as to the effects of diets poor in 



protein - - 113 



Different observations summarized - - 114 



Chittenden's unique investigations - - 114 



The long experiment on himself - 114 



Points of interest referred to - 115 



His three groups of subjects - - 116 



Points of interest referred to - - 116 



Chittenden's conclusions as to the protein requirements of 



the body - 118 

 Chittenden corroborated by : 



Caspari and Glassner - - 118 



Hamill and Schryver - - 118 



The teeming millions of Bengal - 118 

 Chittenden's most recent work on the degree of protein 



metabolism exhibited by students - 118 



The conclusion drawn from his findings - 119 



His work on students adversely criticized - 119 

 His figures corrected and shown to disprove the view 



he advocates ..... 121 



