PEACTICAL 



PHYSIOLOGY OF PLANTS 



BY 



FRANCIS DARWIN, M.A., F.R.S, 



FELLOW OF CHRIST'S COLLEGE, CAMBRIDGE, 



AND READER IN BOTANY IN THE UNIVERSHT, 



AND 



THE LATE E. HAMILTON ACTON, M.A., 



FELLOW AND LECTURER OF ST JOHN'S COLLEGE, CAMBRIDGE. ' 



WITH ILLUSTRATIONS. 



THIRD EDITION. 



CAMBRIDGE : 



AT THE UNIVERSITY PRESS. 

 1901 



r t AV. Rights re-e.-ved.T^ ,\ 

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