﻿CONTENTS OF VOL. XIE~ ^ 



(SIXTH SEEIES). 





NUMBEE LXVIL— JULY 1906. 



Page 

 Mr. W. Sutherland on the Molecular Constitution of Aqueous 



Solutions '. . .. 1 



Mr. G. A. Schott on the Electron Theory of Matter and the 



Explanation of Fine Spectrum Lines and of Gravitation . . 21 

 Mr. Gr. F. H. Smith on the General Determination of the 



Optical Constants of a Crystal by means of Refraction 



through a Prism 29 



Mr. E. Hargreaves on Ellipsoidal Harmonics, iEolofropic aud 



Isotropic 30 



Dr. J. G. Leathern on a Simplification of the Mathematical 



Discussion of the Effect of a Loug Straight AVire on 



Electric Waves 46 



Prof. J. H. Jeans on the Thermodynamical Theory of 



Eadiation 57 



Prof. J. H. Jeans on the H- Theorem and the Dynamical 



Theory of Gases 60 



Letter from Mr. Barber Starkey describing remarkable results 



of a Discharge of Lightning upon an Oak-tree : with Note 



by Lord Kelvin = 62 



Mr. H. Davies on the Solution of Problems in Diffraction by 



the Aid of Contour Integration 63 



Prof. B. W. Wood on Interference Colours of Chlorate of 



Potash Crvstals, and a New Method of Isolating Heat 



Waves. (Plate I.) 67 



Mr. A. A. Campbell Swintou on the Effect of Eadium in 



Facilitating the Visible Electric Discharge in Vacuo 70 



Dr. Howard L. Bronson on the Periods of Transformation of 



Eadium A, B, and C 73 



Dr. O. Halm on some Properties of the a Bays of Eadio- 



thorium (II.) " 82 



Notices respecting New Books : — 



Dr. G . Jager'sDieFortschritte derkinetischen Gastheorie. 93 

 Baumert's Lehrbuch der Gerichtlichen Chemie. Zweiter 

 Band 94 



