VI CONTENTS OF VOL. XXXIT. FOURTH SERIES. 



Page 



Proceedings of the Royal Society : — 



Mr. W. Huggins and Dr. W. A. Miller on the Spectrum 



of a New Star in Corona Borealis 310 



On the Figure of the Earth measured Geodetically, by Arch- 

 deacon Pratt, M.A., F.R.S 313 



On the Spectrum of Aqueous Vapour, by M. Janssen 315 



On the Production of Ozone, by M. G. Plante . , 319 



On the Diffusion of Gases through Caoutchouc, by MM. Aron- 

 stein and Sirks 320 



NUMBER CCXVII.— NOVEMBER. 



Mr. R. Walker on Ancient Shell Mounds at St. Andrews. 



(With a Plate.) 321 



Dr. Ketteler on the Dispersion of Light in Gases 336 



Mr. F. Galton on the Conversion of Wind-charts into Passage- 

 charts 345 



Dr. Everett on a new Proportion-Table equivalent to a Sliding- 



rule 13 feet 4 inches long 350 



Prof. Jellett on a new Optical Saccharometer 357 



Mr. J. Croll on the Influence of the Tidal Wave on the Motion 



of the Moon , . . . 361 



Prof. Cayley on the Locus of the Foci of the Conies which pass 



through four given Points 362 



M. H. Sainte- Claire Deville on Affinity and Heat 365 



Mr. C. Brooke on the Dynamical Theory of Electricity 378 



Prof. Cayley on Differential Equations 379 



Dr. Atkinson's Chemical Notices from Foreign Journals 381 



Proceedings of the Royal Society : — 



Mr. J. C. Maxwell on the Dynamical Theory of Gases . . 390 

 Theoretical and Experimental Researches on Thermoelectrical 



Currents, by M. F. P. Le Roux 394 



On a means of Weakening the Solar Rays in the Focus of Tele- 

 scopes, by M. Leon Foucault 396 



On the Passage of Thermal and Luminous Rays through inclined 

 Diathermanous and Transparent Plates, by H. Knoblauch . . 398 



NUMBER CCXVIIL— DECEMBER. 



Mr. T. Graham on the Absorption and Dialytic Separation of 

 Gases by Colloid Septa 401 



Mr. J, Gill on Change of State as affecting Communication of 

 Heat 420 



Prof. Curtis on the Freezing of Water at Temperatures lower 

 than 32° F 422 



