PROCEEDINGS

OF THE

Cambridge Philosophical Society.

VOLUME IV.

PROCEEDINGS

OF THE

CAMBRIDGE PHILOSOPHICAL

SOCIETY.

VOLUME IV.

OCTOBER 25, 1880-MAY 28, 1883.

Cambridge:

PRINTED AT THE UNIVERSITY PRESS.

AND SOLD BY

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