PRACTICAL 



PHYSIOLOGY OF PLANTS 



BY 



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



FELLOW OF Christ's college, Cambridge, 



AND READEB IN BOTANY IN THE UNIVERSITY, 



AND 



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



fellow and lectubeb of ST John's college, Cambridge. 



WITH ILLUSTRATIONS. 



SECOND EDITION. 



CAMBRIDGE : 

 AT THE UNIVERSITY PRESS. 



1895 



[All lUghts reserved.] 



