CONTENTS OF VOL. XLII 



(FIFTH SEEIES). 



NUMBER CCL1V.— JULY 1896. 



Prof. A. "W. Witkowski on the Thermodynamic Properties of 



Air. (Plates I. & II.) 1 



Messrs. S. "W. Holman, E. B. Lawrence, and L. Barr on the 

 Melting-points of Aluminium, Silver, Gold, Copper, and 



Platinum 37 



Prof. J. A. Fleming on a further Examination of the Edison 



Effect in Glow-Lamps 52 



Dr. Meyer Wildermann on the Degree of Dissociation of 



Electrolytes at 0° 102 



Dr. S. P. Thompson on Hyperphosphorescence 103 



Prof. J. V. Jones on the Magnetic Field due to an Elliptical 



Current at a point in its plane within it 107 



Mr. W. Sutherland on High Tensions in Moving Liquids . . Ill 

 Notices respecting New Books : — 



Mr. H. B. Goodwin's Azimuth Tables for the Higher 



Declinations 116 



Proceedings of the Geological Society : — 



Miss E. Aston on an Alpine Nickel-bearing Serpentine 

 with Fulgurites ; with Petrographical Notes by Prof. 



Bonney 116 



Dr. C. S. Du Eiche Preller on the Pliocene Glaciation, 

 Pre-Glacial Valleys, and Lake-Basins of Subalpine 



Switzerland 117 



Prof. J. E. Talmage on certain Linear Marks in a Sedi- 

 mentary Bock IIS 



Mr. A. Straban on Submerged Land-Surfaces at Barry, 



Glamorganshire 119 



Mr. A. Strahan on a Phosphatic Chalk with Holaster planus 

 at Lewes 119 



