VOL. I. 



ANATOMY AND PHYSIOLOGY OF ANIMALS, 



VERTEBRATE ANIMALS. 



MAMMALOGY: THE NATURAL HISTORY OF MILK-EATING ANIMAL* 

 ORNITHOLOGY: THE NATURAL HISTORY OF BIRDS. 

 HERPETOLOGY: THE NATURAL HISTORY OF REPTILES. 

 ICHTHYOLOGY: THE NATURAL HISTORY OF FISHES. 



INVERTEBRATE ANIMALS. 



THE NATURAL HISTORY OF MOLLUSKS, EMBRACING CONCHOLOGY. 





