ftgft 



Upon the Bactericidal Action of some Ultra-violet Radiations as pro- 

 duced by the Continuous-Current Arc. By J. E. Barnard and H. de 

 R. Morgan. Communicated by Sir Henry Roscoe, F.R.S 126 



On the Propagation of Tremors over the Surface of an Elastic Solid. 

 By Horace Lamb, F.R.S. (Abstract) 128 



Some Preliminary Observations on the Assimilation of Carbon 

 Monoxide by Green Plants. By W. B. Bottomley, Professor of 

 Botany, King's College, London, and Herbert Jackson, Assistant 

 Professor of Chemistry, King's College, London. Communicated by 

 Professor J. Reynolds Green, Sc.D., F.R.S 130 



No. 479. August 14, 1903. 



The Forces Acting on a Charged Condenser moving through Space By 

 Professor F. T. Trouton, F.R.S., and H. R. Noble, B.Sc., University 

 College, London. (Abstract) 132 



On the Synthesis of Fats accompanying Absorption from the Intestine. 

 By Benjamin Moore, M.A., D.Sc., Johnston Professor of Bio- 

 chemistry at University College, Liverpool. Communicated by 

 Professor C. S. Sherrington, F.R.S '.. 134 



Observations on the Physiology of the Cerebral Cortex of the Anthro- 

 poid Apes. By A. S. F. Grunbaum, M.D., F.R.C.P., and C. S. Sher- 

 rington, M.A., M.D., F.R.S 152 



Separation of Solids in the Surf ace-lay ers of Solutions and "Suspen- 

 sions " (Observations on Surface-membranes, Bubbles, Emulsions, and 

 Mechanical Coagulation). Preliminary Account. By W. x Ramsden, 

 M.A., M.D., Oxon., Fellow of Pembroke College, Oxford. Com- 

 municated by Professor F. Gotch, F.R.S 156 



The Xanthophyll Group of Yellow Colouring Matters. By C. A. 

 Schunck. Communicated by Horace T. Brown, F.R.S. (Plates 6 

 and 7 ) 165 



On the Determination of Specific Heats, especially at Low Tempera- 

 tures. By H. E. Schmitz, M.A., B.Sc. Communicated by Arthur 

 Schuster, F.R.S 177 



The Elasmometer, a New Interferential Form of Elasticity Apparatus 

 By A. E. H. Tutton, F.R.S. (Abstract) 193 



No. 480. August 15, 1903. 



On the Spectrum of the Spontaneous Luminous Radiation of Radium 

 <ot Ordinary Temperatures. By Sir William Huggins, K.C.B., O.M., 

 D.G.L., Prea. R.S., and Lady Huggins. (Plate 8) 196 



On the Oxidising Action of the Rays from Radium Bromide as shown 

 by the Decomposition of lodoform. By W. B. Hardy, F.R.S., Cains 

 College, Cambridge, and Miss E. G. Willcock, Newnham College, 

 Cambridge \ *J 2(K) 



Experiments in Radio-activity, and the Production of Helium from 

 Radium By Sir William Ramsay, K.C.B., F.R.S., and Frederick 

 Soddy, M.A 204 



