r^ t 





CARNEGIE INSTITUTION OF WASHINGTON 



Publication No. 204 



Botanical Contributions from the Johns Hopkins University, Nos. 38 and 39. 



Copies of tf>^ BoqIi 

 vvwe- first issuad 



MAR 1 T9t5 



rUESS of GIBSON BROTHERS 

 WASHINGTON, D. C. 



