THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Vol. XIV. (If.S.), M. 35. MARCH, 1915. 



A PEELIMINARY ACCOUNT OF A NEW 

 OEDANOMETER FOR MEASURING THE 

 EXPANSIVE FORCE OF SINGLE SEEDS, 

 OR SIMILAR SMALL BODIES, WHEN 

 WETTED. 



BV 



J. BAYLEY BUTLER, M.A., M.B., 



PEOFESSOR OF BOTANY, UNIVERSITY COLLEGE, DUBLIN ; 



JOHN M. SHERIDAN, B.A., M.Sc. 



ASSISTANT IN THE BIOLOGICAL DEPARTMENT OF UNIVERSITY COLLEGE, GALWAY. 



\_A ulhors alone are responsible for all opinions expressed in their Gommunicafions.^ 



DUBLIN : 



PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 



LEINSTER HOUSE, DUBLIN. 



WILLIAMS AND NORGATE, 



14, HENRIETTA STREET, COVENT GARDEN, LONDON, W.C. 



1915. 



Price One Shilling. /^^^° 



^ DEC u im 



KX^ 



