Vlll ANIMAL STUDIES 



CHAPTER pAflB 



XXV. THE SPECIAL SENSES ... ,371 



XXVI. INSTINCT AND REASON ...... 387 



XXVII. ECONOMIC ZOOLOGY ..,,- 404 



XXVIII. THE ANIMALS OP THE PAST . . 417 



XXIX. GEOGRAPHICAL DISTRIBUTION OF ANIMALS . , 435 



