Page:Proceedings of the Royal Society of London Vol 60.djvu/456

424 of Palaeozoic Cryptogams, allowing of comparison with has actually been brought to light, the discovery of which Dr. Williamson and I ventured to anticipate at the close of our first joint memoir.

Sir JOSEPH LISTER, Bart., F.R.C.S., D.C.L., President, followed by Sir JOHN EYANS, K.C.B., Treasurer and Vice-President, in the Chair.

Mr. John Eliot and Dr. Edward Charles Stirling were admitted into the Society.

A List of the Presents received was laid on the table, and thanks ordered for them.

The Treasurer offered the congratulations of the Society to thePresident on his elevation to the peerage.

The following Papers were read:—

I. “ On the Capacity and Residual Charge of Dielectrics as affected by Temperature and Time.” By J. H opkinson, F.R.S., and E. Wilson.

II. “ On the Electrical Resistivity of Electrolytic Bismuth at Low Temperatures and in Magnetic Fields.” By J ames D ewar,. M.A., LL.D., E.R.S., Eullerian Professor of Chemistry in the Royal Institution ; and J. A. F leming, M.A., D.Sc., F.R.S.r Professor of Electrical Engineering in University College,. London.

III. “ On the Selective Conductivity exhibited by certain Polarising Substances.” By J agadis Chunder B ose, M.A., D.Sc., Professor of Physical Science, Presidency College, Calcutta. Communicated by Lord R ayleigh, F.R.S.