ILLUSTRATIONS 



Lily and Sphinx Moths. Frontispiece 



Parts of the Lily Flower 



The Giant Silkworm 



Opened Cocoon of Cecropia 



The Fish 



The Life Story of the Frog 



The Development of the Frog's Egg 



The Chick 



Nest and Young of the Rabbit 



Reproductive Organs of the Female Rabbit Fig. 3 



Rabbit with Young in Uterus 



The Mammal Egg and Sperm Cells 



The Human Embryo 



Human Sperm Cells 



Reproductive Organs of Human Male 



Reproductive Organs of Human Female 



Reproductive Organs of Human Female, 



Side View 

 Parallel Development of Rabbit and Man 

 Diagram of Human Embryo 



VII 



