ELEMENTS OF PLANT 

 BIOLOGY 



BY 



A. G. TANSLEY, M.A., F.R.S. 



University Lecturer in Botany and Examiner in Elementary 

 Biology to the University of Cambridge 



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LONDON: GEORGE ALLEN & UN WIN LTD. 

 RUSKIN HOUSE, 40 MUSEUM STREET, W.C. i 

 NEW YORK : DODD, MEAD & COMPANY 



