12 



CONTENTS 



CnAPTER 



XXII. 



XXIII. 

 XXIV. 

 XXY. 

 XXVI. 

 XXVII. 

 XXVIII. 

 KXIX. 



The Vertebrate Animals 



Fishes 



Amphibia. The Frog 



Reptiles 



Birds 



Mammals 

 Man, a Mammal 

 Foods and Dietaries 

 Digestion and the Absorption 

 The Blood and its Circulation 

 Respiration and Excretion 

 The Nervous System and Oucans of Sense 

 Health and Disease — A Chapter on Ciyi 



PAGE 



. 274 



. 275 



. 285 



. 293 



. 297 



. 311 



. 319 

 330 



. 352 



. 366 



. 882 



. 399 



Biology 418 



Index . 437 



