CONTENTS. 
PREFACE ... j ee 
List oF ILLUSTRATIONS 
List oF PLATES... 
List oF TABLES... 
Part I. 
CHAPTER I. 
LIVING MATTER. 
Physical Properties of Protoplasm 
Chemical Properties of Protoplasm 
Primary Vital Functions of Protoplasm 
Secondary Vital Functions of Protoplasm 
Food of Animals 
Plants and Animals 
Transfer of Energy 
CHAPTER II. 
COMPARATIVE PHYSIOLOGY. 
Alimentary System aie i by ase 
Motor System 
Sense Organs 
Excretory System 
Vascular System ... 
Nervous System ... 
Skeletal System ... 
Reproductive System 
CHAPTER III. 
COMPARATIVE MORPHOLOGY. 
Animal Symmetry 
Morphological Units 
Structure and Function ... 
Classification 
ia 
HOUDU ON AD 
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