■^t 



PROCEEDINGS 



OF THE 



CAMBRIDGE PHILOSOPHICAL 

 SOCIETY. 



VOL. XII. PART VI. 



[Easter Term 1904.] 



aDamtn-ttige.^Hss 

 AT THE UNIVERSITY PRESS, 



AND SOLD BY 



DEIGHTON, BELL & CO. AND MACMILLAN & BOWES, CAMBRIDGE. 



C. J. CLAY AND SONS, AVE MARIA LANE, LONDON. 



1904 



Price Two Shillings and Sixpence. 



19 August, 1904. 



