«~0&. /2_ 



PROCEEDINGS 



OF THE 



CAMBRIDGE PHILOSOPHICAL 

 SOCIETY. 



VOLUME IV. 



October 25, 1880— May 28, 1883. 



<2Dambrt&ge : 

 PRINTED AT THE UNIVERSITY PRESS. 



AND BOLD BY 



DEIGHTON, BELL AND CO. AND MACMILLAN AND CO. CAMBRIDGE; 

 BELL AND SONS, LONDON. 



1883 



