PKOCEEDINGS OF 

 THE ROYAL SOCIETY. 



VOL. LXV. No. 416. 



OFFIC .LIBRARY 



CONTENTS. 



PAGH 



Meeting of May 18, 1899, and List of Papers read . . . 165 



On a Self -recovering Coherer and the Study of the Cohering Action of dif - 

 ferent Metals. By Jagadis Chundeb Bose, M.A., D.Sc, Professor of 

 Physical Science, Presidency College, Calcutta. Communicated by 

 Lord Rayleigh, F.R.S 166 



Bakebian Lectube. — The Crystalline Structure of Metals. By J. A. 

 Ewing, F.R.S., Professor of Mechanism and Applied Mechanics in the 

 University of Cambridge, and W. Rosenhain, 1851 Exhibition Re- 

 search Scholar, Melbourne University 172 



The Yellow Colouring Matters accompanying Chlorophyll, and their Spectro- 

 scopic Relations. By C. A. Schttnck. Communicated by Edwabd . 

 Schttnck, F.R.S. (Plate 6) 177 



On the Chemical Classification of the Stars. By Sib Nobman Lockyeb, 



K.C.B., F.R.S. (Plate 7) 186 



The Diffusion of Ions into Gases. By John S. Townsend, M.A. (Dublin), 

 Clerk Maxwell Student, Cavendish Laboratory, Cambridge. Communi- 

 cated by Professor J. J. Thomson, F.R.S 192 



On the Presence of Oxygen in the Atmospheres of certain Fixed Stars. By 

 David G-ill, C.B., F.R.S., &c, Her Majesty's Astronomer at the Cape 

 of Good Hope. (Plate 8) 196 



Price Two Shillings and Sixpence. 



July 14, 1899. 



