THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Vol. XIII. (KS.), lo. 16. EEBMART, 1913. 



CHANGES IN THE OSMOTIC PEESSURE OF 

 THE SAP OF THE DEVELOPING LEAVES 

 OF 8YRINGA VULGARIS. 



BY 



HENRY H. DIXON, Sc.D., F.R.S., 



UNIVERSITY PROFESSOR OF BOTANY, TRINITY COLLEGE, DUBLIN, 



AND 



W. R. G. ATKINS, M.A., 



ASSISTANT TO THE PROFESSOR OF BOTANY, TRINITY COLLEGE, DUBLIN. 



[^ uthors alone are responsible for all opinions expressed in their Communications.'] 



DUBLIN: 



PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 

 LEINSTER HOUSE, DUBLIN. 



WILLIAMS AND NORGATE, y-^^^^^^^^ 



U, HENRIETTA STREET, COVENT GARDEN, LONDON, 'W.C. /<o^ ' " '" 



1912. ( JUN ?:• 



Price Sixpence. 



