THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Yol. XIY. (KS.), lo. 29. JANUARY, 1915. 



A QUANTITATIVE EXAMINATION OF THE 



ELEMENTS OF THE WOOD OF TREES IN 

 RELATION TO THE SUPPOSED FUNCTION 

 OF THE CELLS IN THE ASCENT OF SAP. 



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



UNIVEESITY PROFESSOR OF BOTANY, TRINITY COLLEGE; 



MISS E. S. MARSHALL, B.A. 



[/I ulhors alone are responsible for all opinions expressed in their Gommunicaiions'] 



DUBLIN : 



PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 



LEINSTER HOUSE, DUBLIN. 

 WILLIAMS AND NORGATE, 



14, HENRJET'J'A STREET, COVENT GARDEN, LONDON, W.C. 

 1915. 



Price Sixpence. ^^^^.,„ ,„^^.^^^ 



