viii CONTENTS 



CHAPTER VI. 



THE INFLUENCE OF CHEMICAL FACTORS UPON THE RESPIRATORY 



EXCHANGE - 66 



SECTION 



1. The Influence of Various Drugs - 66 



2. The Effects of Variations in the Oxygen Supply - 73 



3. The Anaerobic Life of Animals - 82 



CHAPTER VII. 



THE INFLUENCE OF PHYSICAL FACTORS UPON THE RESPIRATORY 



EXCHANGE - 84 



SECTION 



1. The Influence of Temperature - - 84 



2. The Influence of Light - 102 



3. The Influence of Electric Currents . 103 



CHAPTER VIII. 



THE VARIATIONS IN STANDARD METABOLISM DURING THE LIFE CYCLE 



OF THE INDIVIDUAL 104 



SECTION 



1. Metabolism during Embryonic Development - - 104 



2. Metabolism during the Pupal Life of Insects . m 



3. The Respiratory Exchange during Growth and Senile Decay 1 1 3 



4. Variations in Standard Metabolism in the Full-grown 



Organism - - 118 



5. Hibernation in Mammals- - 124 



CHAPTER IX. 



THE RESPIRATORY EXCHANGE IN DIFFERENT ANIMALS - - - 131 



SECTION 



1. Comparison between Individuals belonging to the same 



Species and of the same Size 131 



2. Comparison between Animals of the Same Species but of 



Different Size. The "Surface Law" - 133 



3. Comparison between Different Species of Warm-blooded 



Animals - - 141 



4. Comparison between Warm-blooded and Cold-blooded, and 



between Different Cold-blooded, Animals - 143 



BIBLIOGRAPHY - 151 



INDEX - - 169 



