PHILOSOPHICAL TRANSACTIONS 
OJ THE 
ROYAL SOCIETY OF LONDON. 
Series A, VOL. 212, pp. 187-204. 
f 
ON THE VARIATION WITH TEMPERATURE OF 
THE RATE OF A CHEMICAL CHANGE. 
BY 
A. VERNON HARCOURT, M.A., Hon. D.Sc. Oxon, F.R.S. 
WITH AN APPENDIX. 
BY 
WILLIAM ESSON, M.A., F.R.S., 
SAVILIAN PROFESSOR OF GEOMETRY IN THE UNIVERSITY OF OXFORD. 
LONDON: 
PUBLISHED BY THE ROYAL SOCIETY, 
AND SOLD BY HARRISON AND SONS, ST. MARTIN’S LANE. 
DULAU AND CO., LTD., 37, SOHO SQUARE, W. 
FRIEDLANDER AND SON, BERLIN. 
1912. 
A 489. 
Price One Shilling. 
10 . 8.12 
