VI 



No. 397. 



Page 



Meeting of May 26, 1898, and List of Papers read 270 



On the Intimate Structure of Crystals. Part I. Crystals of the Cubic 

 System with Cubic Cleavage. By W. J. Sollas, LL.D., D.Sc., F.E.S., 

 Professor of Geology in the University of Oxford 270 



On the Intimate Structure of Crystals. Part IT. Crystals of the Cubic 

 System with Cubic Cleavage. Haloid Compounds of Silver. By W. 

 J. Sollas, LL.D., D.Sc., F.E.S., Professor of Geology in the University 

 of Oxford 286 



On the Intimate Structure of Crystals. Part III. Crystals of the 

 Cubic System with Cubic Cleavage. By W. J. Sollas, LL.D., D.Sc., 

 F.E.S., Professor of Geology in the University of Oxford 296 



The Electrical Eesponse of Nerve to a Single Stimulus investigated 

 with the Capillary Electrometer. Preliminary Communication. By 

 F. Gotch, M.A., F.R.S., Professor of Physiology, University of 

 Oxford, and G. J. Burch, M.A. (Oxon.) 300 



No. 398. 



On the Magnetic Susceptibility of Liquid Oxygen. By J. A. Fleming, 

 M.A., D.Sc., F.E.S., Prof essor of Electrical Engineering in University 

 College, London, and James Dewar, M.A., LL.D., F.E.S., Fullerian 

 Professor of Chemistry in the Eoyal Institution, London, &c 311 



Aluminium as an Electrode in Cells for Direct and Alternate Currents. 

 By E. Wilson. Communicated by Dr. J. Hopkinson, F.E.S 329 



Contributions to the Study of " Flicker." By T. C. Porter, Eton College. 

 Communicated by Lord Eayleigh, F.E.S 347 



On the Kathode Fall of Potential in Gases. By J. W. Capstick, M.A., 

 D.Sc., Fellow of Trinity College, Cambridge. Communicated by 

 Professor J. J. Thomson, F.E.S 356 



Note on the Complete Scheme of Electrodynamic Equations of a Moving 

 Material Medium, and on Electrostriction. By Joseph Larmor, 

 F.E.S., Fellow of St. John's College, Cambridge 365 



No. 399. 



Annual Meeting for the Election of Fellows 373 



Meeting of June 9, 1898, and List of Papers read 373 



An Extension of Maxwell's Electro-magnetic Theory of Light to include 

 Dispersion, Metallic Eeflection, and Allied Phenomena. By Edwin 

 Edser, A.E.C.S. Communicated by Captain W. de W. Abney, C.B., 

 F.E.S 374 



A Photographic Investigation of the Absorption Spectra of Chlorophyll 

 and its Derivatives in the Violet and Ultra-violet Eegion of the 

 Spectrum. By C. A. Schunck. Communicated by Dr. E. Schunck, 

 F.E.S. (Plates 3, 4, 5) 389 



