A Magazine of General Botany 



VOLUME 18 

 NUMBER 11 



NOVEMBER, 1915 



CONTAINING 



An Investigation of the Causes of Autonomic Movements in Succulent 

 Plants. I. 

 Edith Bellamy Shreve 297 



A Useful Drawing Camera. 



Richard M. Holman 313 



Books and Current Literature 317 



Notes and Comment 319 



PUBLISHED MONTHLY 



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BALTIMORE, MD. 



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Entered as seoond-class matter March 9, 1912, at the post office at Baltimore, Maryland, under the Act of July 16, 1894 



