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A Method for rapidly producing Diphtheria Antitoxin es. Preliminary 

 Note. By G. E. Cartwright Wood, M.D., B.Sc 290 



List of Presents ., 298 



No. 35V.— March 5, 1896. 



List of Candidates 300 



Contributions to the Mathematical Theory of Evolution. Note on 

 Eeproductive Selection. By Karl Pearson, University College, 

 London. 301 



On the Diurnal Periodicity of Earthquakes. By Charles Davison, M. A., 

 F.G.S., Mathematical Master at King Edward's High School, Bir- 

 mingham I : 305 



List of Presents 307 



March 12, 1896. 



Croonian Lecture. — Observations on Isolated Nerve. Electrical Changes 

 a Measure of Physico-chemical Change. By Augustus D. Waller, 

 M.D., F.E.S ." 308 



List of Presents 312 



March 19, 1896. 



The Photographic Values of Moonlight and Starlight compared with 

 the Light of a Standard Candle. By Captain W. de W. Abney, C.B., 

 R.E., F.R.S 314 



Helium, a Gaseous Constituent of certain Minerals. Part II— Density. 

 By William Ramsay, F.R.S. , Professor of Chemistry, University 

 College, London 325 



On the Reflection of Rontgen Light from Polished Speculum-Metal 

 Mirrors. By Lord Blyths wood 330 



Note on Lord Blythswood's Paper. By Lord Kelvin, F.R.S 332 



On the Effect of the Rontgen X Rays on the Contact Electricity of 

 Metals. By James R. Erskine ' Murray, B.Sc, 1851 Exhibition 

 Scholar, Trinity College, Cambridge 333 



The Effect of Rontgen Rays on Cloudy Condensation. By C. T. R. 

 Wilson, B.Sc. (Vict)., B.A. (Cantab.), Clerk-Maxwell Student 338 



On the Relations of Turacin and Turacoporphyrin to the Colour- 

 ing Matter of the Blood. By Arthur Gamgee, M.D., F.R.S., 

 Emeritus Professor of Physiology in the Owens College, Victoria 

 University 339 



On the new Gas obtained from Uraninite. (Seventh Note.) Remarks 

 on Messrs. Runge and Paschen's Diffusion Experiment. By J. Nor- 

 man Lockyer, C.B., F.R.S 342 



Problems in Electric Convection. By G. F. C. Searle, M.A 343 



