Vll 



No. 458. 



Page 



Meeting of February 20, 1902, and List of Papers read 451 



On Pure Cultures of a Uredine, Pucdnia dispersa (Eriks.). By H. 

 Marshall Ward, F.R.S 451 



On the Physics and Physiology of the Protoplasmic Streaming in 

 Plants. By Alfred J. Ewart, B.Sc. (Oxon.), D.Sc. (Lond.), Ph.D., 

 F.L.S., Lecturer on Botany in the Birmingham Technical Institute. 

 Communicated by Francis Gotch, D.Sc., F.R.S 466 



Preliminary Note on a Method of Calculating Solubilities, and the 

 Equilibrium Constants of Chemical Reactions, and on a Formula for 

 the Latent Heats of Vaporisation. By Alexander Findlay, M.A., 

 B.Sc., Ph.D. Communicated by Professor Ramsay, F.R.S 471 



Note on the Anomalous Dispersion of Sodium Vapour. By W. H. 

 Julius, Professor of Physics in the University of Utrecht. Com- 

 municated by C. Vernon Boys, F.R.S 479 



On the Increase of Electrical Resistivity caused by Alloying Iron with 

 Various Elements, and the Specific Heat of those Elements. By 

 W. F. Barrett, F.R.S., Professor of Experimental Physics in the 

 Royal College of Science for Ireland 480 



On a Pair of Ciliated Grooves in the Brain of the Ammoco3te, apparently 

 serving to promote the Circulation of the Fluid in the Brain-cavity. 

 By Arthur Dendy, D.Sc., F.L.S., Professor of Biology in the Canter- 

 bury College, University of New Zealand. Communicated by 

 Professor G. B. Howes, LL.D., F.R.S 485 



Meeting of February 27, 1902, Lecture delivered and Paper read 495 



BAKERIAN LECTURE : On the Law of the Pressure of Gases between 

 75 and 150 Millimetres of Mercury. By Lord Rayleigh, F.R.S 495 



Note on the Discovery of a New Trypanosoma. By David Bruce, 

 F.R.S., Lieut. -Col. RJLM.C 496 



Index ... 497 



