A Magazine of General Botany 



III. 

 VOLUME 19 



NUMBER 11 



NOVEMBER, 1916 



OONTAININO 



Selective Permeability and the Plasma-membrane 



J. Davidson 331 



The Orchids of Hawaii 



Vaughan MacCaughey 350 



Books and Current Literatture 356 



Notes and Comment 357 



i 



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Kntered as seoond-claos matter March 9. 1912, at the post office at Baltimore, Maryland, uoder the Aot of July 16, 1894 



