PROCEEDINGS 
OF THE 
CAMBRIDGE PHILOSOPHICAL 
SOCIETY 
VOLUME XVIII. 
OcToBER 26, 1914—May 22, 1916. 
Cambridge ; 
AT THE UNIVERSITY PRESS 
AND SOLD BY 
DEIGHTON, BELL & CO., LIMITED, 
AND BOWES & BOWES, CAMBRIDGE 
CAMBRIDGE UNIVERSITY PRESS, 
Cc. F, CLAY, MANAGER, FETTER LANE, LONDON, E.C. 
1916 
