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PART II. ANIMAL BIOLOGY
I. Introduction 1
II. Protozoans 10
III. Sponges 17
IV. Polyps 22
V. Echinoderms 34
VI. Worms 42
VII. Crustaceans 51
VIII. Insects 63
IX. Mollusks 97
X. Fishes 109
XI. Batrachians 126
XII. Reptiles 139
XIII. Birds 150
XIV. Mammals 184
PART III. HUMAN BIOLOGY
I. Introduction 1
II. The Skin and Kidneys 16
III. The Skeleton 29
IV. The Muscles 39
V. The Circulation 51
VI. The Respiration 70
VII. Food and Digestion 89
VIII. The Nervous System 117
IX. The Senses 142
X. Bacteria and Sanitation 158
General Index i
