CONTENTS 



CHAPTER I 



PAGE 



EXCHANGE OF MATERIAL ...... 1 



1. Historical account of researches upon metabolism. 2. Methods 

 employed to determine the qualitative and quantitative data of the 

 balance between intake and output. 3. Two typical examples of balance 

 of exchange of material in man. 4. Difference in the resistance of man 

 and animals to deprivation of food. 5. Inanition and hibernation : 

 relative and absolute loss of weight of the different tissues during 

 abstinence from food ; course of the curve of total loss during the three 

 phases of starvation. 6. Consumption of material during fasting de- 

 duced from analyses of the urine and respiratory products ; influence of 

 size of body, age, sex, and constitution. 7. Exchange upon a diet of 

 meat. 8. Exchange on a diet of fats and carbohydrates with or without 

 the addition of protein. 9. Nutritive value of the digestive products 

 of foods and gelatine. 10. Alcoholic drinks, condiments, spices, and 

 aromatic substances. 11. Water and the mineral salts contained in the 

 ashes of food-stuffs. 12. General conclusions and theory of exchange of 

 material. Bibliography. 



CHAPTER II 



THE THERMIC ECONOMY OF THE ORGANISM . . .51 



1. Potential energy of foods from which the amount of heat de- 

 veloped daily by the organism can be calculated. 2. Homoiothermic 

 and poikilo thermic animals ; the thermic topography of man ; daily 

 variations in temperature. 3. Influence on the average temperature of 

 age, sex, race, climate, seasons, food, muscular activity, psychical 

 activity. 4. Regulation of temperature in homoiothermic animals and 

 man ; internal conditions and the vasomotor system which determine the 

 equilibrium of temperature in an environment of moderate warmth ; the 

 nervous system as the regulator of the production of heat in order to 

 protect the organism from cold ; the nervous mechanisms regulating the 



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