y y -'y/ 



'7m 



A Journal of General Botany 



VOLUME 21 

 I^ U M B E R 8 



AUGUST, 19 18 



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OONTAININ& 



Notes on Dime Vegetation at San Francisco, California. Francis Ramaley. 191 



Porous Clay Cones for the Auto-Irrigation of Potted Plants. Burton E. 



Livingston 202 



The Genus Morinda in the Hawaiian Flora. Vaughan MacCaughey 209 



Books and Current Literature 215 



Notes and Comment 219 



PTTBU8HED MONTHLY 



OFFICE OF PUBLICATION 

 2419-21 Greenmount Ave. 



BAI/nMORE, MD. 



EDITORIAL OFFICE 



TUCSON, ARIZONA 



Bntered as second-class matter March 9. 1912, at tho post oGSce at Baltimore, Maryland, under the act of July 10, 1S94 



