CONTENTS 



PART 1. Page. 



Introduction 1 



Limitations of normal data and accepted standards 2 



Studies of the respiratory exchange 3 



Normal activity restricted by the conditions of experiments. . 7 



Metabolism during specific activities and movements 8 



Specific object of experiments here reported 9 



Method of experimenting 10 



Scope and routine of present series of experiments 11 



PART 2. 



Statistics of experiments 13 



Metabolism experiment No. 101 13 



Food 15 



Urine 17 



Elimination of water-vapor 17 



Elimination of carbon dioxide 18 



Measurements of oxygen consumed and heat eliminated 18 



Material katabolized in the body 19 



Balance of intake and output of nutrients 21 



Transformation of energy 22 



Metabolism experiment No. 102 23 



Food 25 



Urine 25 



Elimination of water-vapor and carbon dioxide 25 



Oxygen consumed 26 



Heat elimination and production 26 



Balance of matter and energy 27 



Comparison of factors of metabolism 29 



Metabolism experiments Nos. 103 to 157 30 



Dressing and undressing experiments 79 



Metabolism experiments Nos. 158 to 178 79 



Experiments with women 89 



Metabolism experiments Nos. 179 to 183 89 



Summary of the results in metabolism experiments 92 



PART 3. 



Discussion of results 101 



Comparison of methods 101 



Duplication of results in individual metabolism 104 



Constancy in metabolism as reported by earlier writers 105 



Duplication in series here published 105 



Duplication in experiments during muscular work 108 



Changes in body-weight 109 



Change in body-weight as index of body condition 109 



Influence of diet on body-weight and the store of water 110 



Effect of transition from large carbohydrate to large fat diet. 110 



Insensible perspiration 112 



Insensible loss by gaseous exchange an aid in obtaining inter- 

 mediate body-weights 112 



Experiments on loss during the night 113 



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