CONTENTS 



CHAPTER 



I. The Amphibia in General and Frogs in Particular 



II. The Habits and Natural History of the Frog 



III. External Characters of the Frog 



IV. Preliminary Account of the Internal Stricture 

 V. The Development of the Fro< 



VI. Histology of the Frog 



VII. The Digestive System and its Function 



VIII. The Vocal and Respiratory Organs 



IX. The Skin . 



X. The Excretory System 



XI. The Reproductive Organs 



XII. Internal Secretion and t 



XIII. The Skeleton . ' . 



XIV. The Muscular System 

 XV. The Circulatory System 



XVI. The Nervous System . 



XVII. The Sense Organs 



XVIII. Instincts and Tropisms as related to Reflex 



Action 



XIX. The Intelligence of the Frog 



and the Fat Bodies 

 he Ductless Glands 



INDEX 359 



PAGE 

 I 



23 

 62 



68 



81 



121 



134 

 165 



179 

 201 

 212 

 219 

 229 

 246 

 258 

 283 

 321 



342 

 353 



