CONTENTS OF VOL. XLIV. FOURTH SERIES. V 



Page 

 Dr. H. Hudson on Wave-Theories of Light, Heat, and Elec- 

 tricity 210 



The Hon. J. W. Strutt on the Law of Gaseous Pressure .... 219 

 Proceedings of the Royal Society : — 



Messrs. C. Tomlinson and G. van der Mensbrugghe on 

 Supersaturated Saline Solutions. — Part HL On a re- 

 lation between the Surface-tension^of Liquids and the 



Supersaturation of Saline Solutions 223 



Proceedings of the Geological Society : — 



Dr. Oldham and Mr. R. Mallet on some of the Secondary 

 Effects of the Earthquake of the 10th January, 1869, in 



Cachar 232 



On the Influence of Pressure in the Phenomena of Endosmose 



and Exosmose, by M. Becquerel 233 



On the Action of Ozone upon Vulcanized Caoutchouc, by Prof. 



Arthur W. Wright , . . . 235 



On the instantaneous Oxidation of Alcohol, by M. A. Houzeau. 237 

 On some Effects of Slow Actions, produced in the course of a 



certain number of years, by M. Becquerel 238 



Reply to Professor Clausius, by P. G. Tait 240 



NUMBER CCXCIIL— OCTOBER. 



MM. Jamin and Richard on the Cooling of Gases 241 



Mr. T. E. Thorpe on an Improved form of Filter-Pump. (With 



a Plate.) 249 



M. H. F. Weber on the Specific Heat of Carbon 251 



Dr. A. M. Mayer on a precise Method of tracing the Progress 

 and of determining the Boundary of a Wave of Conducted 



Heat 257 



M. G. Quincke on Electrolysis, and the Passage of Electricity 



through Liquids 261 



Mr. J. W. L. Glaisher on some new Facts in the early History 



of Logarithmic Tables 291 



Mr. R. Moon on the Definition of Intensity in the Theories of 



Light and Sound 304 



Mr. J. Dewar on the Chemical Efficiency of Sunlight 307 



Proceedings of the Royal Society : — 



Dr. J. W. Mallet on the Gases occluded in Meteoric Iron 



from Augusta Co., Virginia 311 



Mr. G. Gore on some Properties of Anhydrous Liquefied 



Ammonia 315 



Prof. G. G. Stokes on the Law of Extraordinary Refraction 



in Iceland Spar 316 



Report on a Memoir by MM. F. Lucas and A. Cazin, on the 



Duration of the Electric Spark, by Edm. Becquerel 316 



On a new Galvanic Pile, of Economic Construction, by M. Gaiffe. 320 

 On "Acoustical Experiments " &c., by Alfred M. Mayer .... 320 



