I. “An Experimental Research upon Cerebro-cortical Afferent and Efferent Tracts.” By David Ferrier, M.D., F. R. S., Professor of Neuropathology, and William Aldren Turner, M.D.., F.R.C.P., Demonstrator of Neuropathology, King’s College, London. II. “On the Relative Behaviour of the H and K Lines of the Spectrum of Calcium.” By William Huggins, D.C.L., LL.D., F. R. S., and Mrs. Huggins. III. “ Further Observations of Enhanced Lines.” By J. Norman Lockyer, C.B., F. R. S. IV. “The Total Solar Eclipse of August 9, 1896. Report on the Expedition to Kiö Island.” By J. Norman Lockyer, C.B., F. R. S. V. “On the Classification of Stars of the δ Cephei Class.” By J. Norman Lockyer, C.B., F. R. S. VI. “On the Appearance of the Cleveite and other New Gas Lines in the Hottest Stars.” By J. Norman Lockyer, C.B., F. R. S. VII. “On the Action exerted by certain Metals and other Substances on a Photographic Plate.” By W. J. Russell, Ph.D., F. R. S., Lecturer on Chemistry at St. Bartholomew’s Hospital. VIII. “Stress and other Effects produced in Resin and in a Viscid Compound of Resin and Oil by Electrification.” By J. W . Swan, F. R. S. IX. On Lunar and Solar Periodicities of Earthquakes.” By Arthur Schuster, F. R. S. X. “Cathode Rays and some analogous Rays.” By Silvanus P. Thompson, D.Sc., F. R. S. XI. “Micro-physical Structure of pure Gold and Micro-segregation in Gold Alloys.” By Thomas Andrews, F. R. S. XII. “A Maya Calendar Inscription, interpreted by Goodman’s Tables.” By Alfred P. Maudslay. Communicated by F. Ducane Godman, F. R. S. XIII. “Studies in the Morphology of Spore-producing Members Part III. Marattiaceæ.” By F. O. Bower, Sc.D., F. R. S., Regius Professor of Botany in the University of Glasgow. XIV. “The Vector Properties of Alternating Currents and other Periodic Quantities.” By W. E. Sumpner, D.Sc. Communicated by O. Henrici, F. R. S. XV. “On the Theory of the Magneto-Optic Phenomena of Iron, Nickel, and Cobalt.” By J. G. Leathem, B.A., Fellow of St. John’s College, Cambridge. Communicated by Sir Robert S. Ball, F. R. S. XVI. “Some Observations on the Chemistry of the Contents of the Alimentary Tract under various conditions ; and on the Influence of the Bacteria present in them.” By A. Lockhart Gillespie, M.D., F.R.C.P.(Ed), F. R. S. E - Communicated by Professor J. G. McK endrick, F. R. S. XVII. “On a Discontinuous Variation occurring in Biscutella lævigata." By Miss E. R. Saunders, Lecturer at Newnham College, Cambridge. Communicated by W. Bateson, F. R. S. XVIII. “Magnetic Properties of Iron at High Temperatures.” By J. Hopkinson, D.Sc., F. R. S. XIX. “On the Change of Absorption produced by Fluorescence.” By John Burke, B.A.(Dub.), Berkeley Fellow of the Owens College, Manchester. Communicated by Professor Arthur Schuster, F. R. S. XX. “Influence of Acids and Alkalis upon the Electrotonic Currents of Medullated Nerve.” By Augustus W. Waller, M.D., F. R. S. XXI. “On the Distribution of Frequency (Variation and Correlation) of the Barometric Height at diverse Stations.” By Karl Pearson, M.A., F. R. S., University College, London, and Miss Alice Lee, Bedford College. XXII. “On the Openings in the Wall of the Body-cavity of Vertebrates.” By E. J. Bles. Communicated by Dr. Hans Gadow, F. R. S. XXIII. “Electrification of Air, of Vapour of Water, and of other Gases.” By Lord Kelvin, G.C.V.O., F. R. S., Magnus Maclean, D.Se., F.R.S.E., and Alexander Galt, B„Sc., F.R.S.E. XXIV. “Note on recent Investigations on the Mechanical Equivalent of Heat.” By E. H. Griffiths, M.A., F. R. S.
Bakerian lecture.—Further experiments on the action exerted by certain metals and other bodies on a photographic plate