—On— . 
* 
+ 
Ae | PHILOSAT SI's SOCIETY, 
Ww 
PRC 
OF THE 
CAMBRIDGE PHILOSOPHICAL 
SOCIETY, - 
VOL. VI; > PART IE 
[Lent AND EASTER TERMS, 1887.]| 
Cambrivae : 
PRINTED AT THE UNIVERSITY PRESS, 
AND SOLD BY 
DEIGHTON, BELL AND CO, AND MACMILLAN AND CO. CAMBRIDGE, 
G. BELL AND SONS, LONDON, 
1887 
