346 
BOTANICAL GAZETTE [NOVEMBER 
This work was carried on under the direction of Professor JoHN 
M. 
COULTER; and my acknowledgments are also due to Dr. C. J. 
CHAMBERLAIN and Dr. W. J. G. Lanp, for kindly assistance. 
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- Norén, C, O., Zur Entwickelungsgeschichte des Ju 
THE UNIVERSITY or CHICAGO 
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