xlii 



T. 



DEVELOPMENT. 

 Plants. 



Examples. Germinating Seeds, &c. 



Animals. 



Examples taxonomically arranged. 



u. 



ALTERNATION OF GENERATION. DIMORPHISM. 



POLYMORPHISM. 

 Plants. 



Animals. 



V. 



SECONDARY SEXUAL CHARACTERS. 



Characters which distinguish the sex, and that are not directly 

 concerned in reproduction. 



Plants. | 



r Examples tuxoiionncallv arranged. 

 Animals. J 



Sexual dimorphism. 



