The 



Plant World 



A Magazine of General Botany 



VOLUME 16 

 K U M B E R 10 

 OCTOBER 1913 



OONTAININO 



First Study of the Relationship Between the Weight of the Bean Seed, 

 Phaseolus Vulgaris, and the Time Required for Its Germination 



By J. Arthur Harris 267 



Plants Introduced into a Desert Valley as a Result of Irrigation 



By S. B. Parish 275 



Cement Aquaria 



By G. E. Stone 281 



Books and Current Literature. . 286 



Notes and Comment 290 



PTTBLI8HBD MONTBLT 



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Entered aa second-clasa matter March 9, 1912, at the post office at Baltimore, Maryland, under the Act of July 16, 1894 



