The 



Pi ant World 



A Magazine of General Botany 









NUMBER 9 





SEPTEMBER 1913 





OONTAININO 





From the Red Sea to the Nile 





By D. T. MacDougal 



243 



A Chart of Physiological Processes: an Aid to the Teaching of Plant 



Physiology 





By William E. Lawrence 



257 



Books and Current Literature. . . 



261 



Notes and Comment 



263 



PUBLISHED UONTHLT 



OFFICE OF PUBLICATION 





2419-21 York Road 





BALTIMORE. MD. 





EDITORIAL OFFICE 





TUCSON, ARIZONA 





Entered as secord-class matter March 9, 1012, at the post office at Baltimore, Maryland, under the Act of July 16. 1894 



