CONTENTS 



CHAPTER 

 I. 



II. 



III. 



IV. 



V. 



VI. 



VII. 



VIII. 



IX. 



X. 



XI. 



XII. 



XIII. 



XIV. 



XV. 



XVI. 



XVII. 



XVIII. 



XIX. 

 INDEX 



The Amphibia in General and Frogs in Particular 



The Habits and Natural History of the Froc 



External Characters of the Frog 



Preliminary Account of the Internal Structure 



The Develorment of the Frog 



Histology of the Frog .... 



The Digestive System and its Functions 



The Vocal and Respiratory Organs 



The Skin 



The Excretory System 



The Reproductive Organs 



Internal Secretion and t 



The Skeleton . 



The Muscular System 



The Circulatory System 



The Nervous System . 



The Sense Organs 



Instincts and Tropisms as related to Reflex 



Action 



The Intelligence of the Frog 



AND THE Fat Bodies 

 HE Ductless Glands 



PAGE 



I 



23 

 62 

 68 

 81 

 121 



134 

 165 

 179 

 201 

 212 

 219 

 229 

 246 

 258 

 283 

 321 



342 

 353 



359 



