CONTENTS OF VOL. XXXIX. 



(FIFTH SEEIES). 



NUMBEE CCXXXVL— JANUARY 1895. 



Page 

 Mr. William Sutherland's Further Studies on Molecular 



Force 1 



Mr. E. H. Griffiths on the Influence of Temperature on the 



Specific Heat of Aniliue. (Plates I. & II.) 47 



Mr. Edwin F. Northrup on a Method for Comparing the 

 Values of the Specific Inductive Capacity of a Substance 

 under Slowly and Bapidly Changing Fields : Eesults for 



Paraffin and Glass. (Plate III.) 78 



Mr. J. Brill on " Densities in the Earth's Crust " 93 



Mr. J. Larmor on the Significance of Wiener's Localization 



of the Photographic Action of Stationary Light- Waves . . 97 

 Mr. C. T. Blanshard on the Bole of Atomic Heat in the 



Periodic Series of the Elements 106 



Mr. John Burke on a Suggestion by Professor J. J. Thomson 

 in Connexion with the Luminescence of Glass due to Kathode 



Bays 115 



Prof. Arthur Smithells on the Luminosity of Gases. (Plate IV.) 122 

 Mr. J. Hopkinson on the Specific Inductive Capacities of 



Water, Alcohol, &c 134 



Prof. Alexander Macfarlane on Colonel Hime's ' Outlines of 



Quaternions ' 135 



Notices respecting New Books : — 



Prof. F. Kohlrausch's Introduction to Physical Measure- 

 ments , 137 



Watts's Dictionary of Chemistry, Vol. IV 139 



Proceedings of the Geological Society : — 



Prof. A. H. Green on some recent Sections in the Malvern 



Hills 140 



Mr. Philip Lake on the Denbighshire Series of Souch 



Denbighshire 141 



Eev. J. F. Blake on some Points in the Geology of the 



Harlech Area 141 



On the Velocity of Sound in Gases, by Tito Martini . . . . r . 142 



