vi 



Page 



On a new Method of determining the Vapour Pressures of Solutions. 

 By E. B. H. Wade, B.A., Scholar and Coutts-Trotter Student of 

 Trinity College, Cambridge. Communicated by Professor J. J. 

 Thomson, F.R.S 285 



On the Passage of Heat between Metal Surfaces and Liquids in contact 

 with them. By T. E. Stanton, M.Sc. Communicated by Professor 

 Osborne Eeynolds, F.K.S . 287 



On the Magnetisation Limit of Iron. By Henry Wilde, F.K.S 291 



Meeting of May 20, 1897. 



Bakerian Lecture. — On the Mechanical Equivalent of Heat. By 

 Osborne Reynolds, M.A., F.K.S., Professor of Engineering, 

 Owens College, and W. H. Moorby 293 



No. 375. 



Annual Meeting for Election of Fellows 297 



Meeting of June 3, 1897, and List of Papers read 297 



On the Dielectric Constants of certain Frozen Electrolytes at and above 

 the Temperature of Liquid Air. By J. A. Fleming, M.A., D.Sc, 

 F.K.S., Professor of Electrical Engineering in University College, 

 London, and James Dewar, M.A., LL.D., F.K.S., Fullerian Professor 

 of Chemistry in the Koyal Institution, London 299 



On the Dielectric Constants of Pure Ice, Glycerine, Nitrobenzol, and 

 Ethylene Dibromide at and above the Temperature of Liquid Air. 

 By J. A. Fleming, M.A., D.Sc, F.R.S., Professor of Electrical Engi- 

 neering in University College, London, and James Dewar, M.A., 

 LL.D., F.R.S., Fullerian Professor of Chemistry in the Koyal Insti- 

 tution, &c 316 



The Sensitiveness of the Retina to Light and Colour. By Captain W. 

 de W. Abney, C.B., D.C.L., F.K.S 330 



On the Mechanism by which the First Sound of the Heart is produced. 

 By Sir Richard Quain, Bart., M.D., F.R.S 331 



Mathematical Contributions to the Theory of Evolution. On the 

 Relative Variation and Correlation in Civilised and Uncivilised 

 Races. By Miss Alice Lee, Bedford College, and Karl Pearson, 

 M.A., F.R.S., Professor of Mathematics and Mechanics, University 



College, London 343 



On the Nature of the Contagium of Rinderpest. Preliminary Commu- 

 nication. By Alexander Edington, M.B., F.R.S.E., Director Colonial 

 Bacteriological Institute, Cape Colony. Communicated by Sir James 

 Crichton Browne, M.D., LL.D., F.R.S 357 



No. 376. 



On the Dielectric Constants of certain Organic Bodies at and below the 

 Temperature of Liquid Air. By James Dewar, M. A., LL.D., F.R.S., 

 Fullerian Professor of Chemistry in the Royal Institution, and J. A. 

 Fleming, M.A , D.Sc, F.R.S., Professor of Electrical Engineering in 

 University College, London 358 



