The Structure and Development 



of 



Mosses and Ferns 



(Arch ego n la tae ) 



BY 



DOUGLAS HOUGHTON CAMPBELL, Ph.D. 



Professor of Botany 



IN THE 



Leland Stanford Junior University 



LIBRARY 



NEW YORK 



aOTANlCAL 



OAROEN 



THE MACMILLAN COMPANY 

 London: Macmillan & Co., Ltd. 



1905 



All rights reserved 



