CONTENTS OF VOL. XXXVI. FIFTH SERIES. 



Profs. Dewar and Fleming on the Electrical Eesistance of 

 Metals and Allovs at Temperatures approaching the Abso- 

 lute Zero. (Plate II.) 271 



Mr. A. A. C. Swinton : Experiments with High Frequency 

 Discharges 300 



Hon. Charles A. Parsons : Experiments on Carbon at High 

 Temperatures and under Great Pressures, and in Contact 

 with other Substances 304 



Notices respecting New Books : — 



Prof. J. A. Ewing's Magnetic Induction in Iron and other 

 Metals 308 



On the Annual and Semi- Annual Seismic Periods, by Charles 

 Davison, M.A 310 



NUMBER CCXXL— OCTOBER. 



Prof. J. J. Thomson on the Effect of Electrification and 

 Chemical Action on a Steam- Jet, and of Water-Vapour 



on the Discharge of Electricity through Gases 313 



Profs. Liveing and Dewar on the Refractive Indices of Liquid 



Nitrogen and Air 328 



Lord Kelvin on the Piezo -electric Property of Quartz 331 



Mr. John Trowbridge on the Oscillations of Lightning Dis- 

 charges and of the Aurora Borealis. (Plate III.) 343 



Prof. F. T. Edge worth on the Calculation of Correlation 



between Organs .... 350 



Mr. M. Carey Lea on Endothermic Reactions effected by 



Mechanical Force 351 



Lord Bayleigh on the Flow of Viscous Liquids, especially in 



Two Dimensions , 354 



Dr. Sophie Bryant on an Example in " Correlation of 



Averages " for Four Variables , 372 



Proceedings of the Geological Society : — 



Prof. J. W. Judd on Composite Dykes in Arran 377 



Mr. J. Postlethwaite on an Intrusive Sheet of Diabase 

 and Associated Rocks at Robin Hood, near Bassen- 



thwaite 379 



Mr. Herbert R. Wood on the Dykes of Hope, Idaho . . 379 

 Dr. Robert Sieger on the Rise and Fall of Lake Tan- 

 ganyika 379 



On a Photometric Method which is Independent of Colour, 



by Ogden N. Rood 380 



Experimental Investigations on Dielectrics, by Dr. G. 

 Benischke 383 





