GENERAL BIOLOGY SERIES 



Monographs and texts to serve as foundation-stones, mile-stones 

 and stepping-stones in the advance of Biology. 



Advisory Editors 

 Edward F. Adolph, University of Rochester 

 Royal N. Chapman, University of Hawaii 

 Charles V. Taylor, Stanford University 

 William R. Taylor, University of Pennsylvania 



This book is Volume One of the 



series. 



