CONTENTS. 
viii 
CHAPTER VIII. page 
How Animals Eat. ...... 49 
1. The Prehension of Eood......... 49 
2. The Mouths of Animals.... 55 
3. The Teeth of Animals........ 63 
4. Deglutition, or How Animals Swallow. 72 
CHAPTER IX. 
The Alimentary Canal..... 74 
CHAPTER X. 
How Animals Digest....... .. 91 
CHAPTER XI. 
The Absorbent System..... 94 
CHAPTER XII. 
Tiie Blood of Animals . t . 97 
CHAPTER XIII. 
The Circulation of the Blood....... 103 
CHAPTER XIV. 
How Animals Breathe ......... Ill 
CHAPTER XV. 
Secretion and Excretion.... . 121 
CHAPTER XVI. 
The Skin and Skeleton ...... 127 
CHAPTER XVII. 
How Animals Move.......... . 154 
1. Muscle. ... 155 
2. Locomotion.. 157 
CHAPTER XVIII. 
The Nervous System. ........ 166 
1. The Senses................. 176 
2. Instinct and Intelligence. ...... 184 
3. The Voices of Animals..... 188 
