CONTENTS.

General Introduction. BY PREST. PORTER,[v]
On The Physical Basis of Life.
PROF. T. H. HUXLEY,		[1]
Correlation of Vital and Physical Forces.
PROF. G. F. BARKER, M.D.,		[37]
As Regards Protoplasm—Reply to Huxley.
JAMES HUTCHISON STIRLING,		[73]
On The Hypothesis of Evolution.
PROF. E. D. COPE,		[145]
Scientific Addresses.
On the Methods and Tendencies of Physical Investigation,[219]
On Haze and Dust,[234]
On the Scientific Use of the Imagination,[247]
PROF. JOHN TYNDALL, LL.D., F.R.S.,[217]