IV CONTENTS OF VOL. XXIV. SIXTH SERIES. 



Page 



Proceedings of the G-eological Society 203-207 



Intelligence and Miscellaneous Articles: — 



Correction to paper in May number, by Prof. A. 



Anderson 208 



On the Quaternionic Form of Belativity, by Arthur W. 

 Conway 208 



NUMBEB CXL.— AUGUST. 



Sir J. J. Thomson : Further Experiments on Positive' Hays. 

 (Plate IX*) .........;........ 209 



The Earl of Berkeley on Solubility and Supersolubility from 



the Osmotic Standpoint 254 



Mr. Gr; Hi Livens on the Influence of Density on the Position 



of the Emission and Absorption Lines in a Gas-spectrum . 268 

 Mr. E. W. B. Gill on Ionization Power of Negative Ions 



by Collisions at High Pressures 293 



Dr. T. S. Taylor on a Determination of the Ionization Curve 



for the Alpha Bays from tolonium in Mercury Yapour . . 296 



Lord Bayleigh on Coloured Photometry 301 



Prof. A. Anderson and Mr. H. N. Morrison on Contact 



Difference of Potential $ and the Action of Ultra- Violet 



Light ..........;;.,. 302 



Prof. Louis T. More and Mr. Edward Gr. Bieman on Magnetic 



Bays . ; . . 307 



Prof. B. W. Wood : Preliminary Note on the Electron 



Atmospheres Of Metals .... ; ....... ■. 316 



Notices respecting New Books: — 



C. J. P. Cave's The Structure of the Atmosphere in 



Clear Weather 322 



J. W. A. Young's Monographs on Topics of Modern 

 Mathematics, relevant to the Elementary Field .... 323 

 Proceedings of the Geological Society 3i:4 



NUMBEB CXLL— SEPTEMBER 



Mr. Gr. H; Knibbs : Mathematical Analysis of some Experi- 

 ments in Climatologicai Physiology, &c. .........,;... 325 



Mr. Ilerbert E. Ives : Studies in the Photometry of Lights 

 of Different Colours. — II. Spectral Luminosity Curves by 

 the Method of Critical Frequency , . 352 



Prof. J. C. McLennan on the Diffusion of Actinium Emana- 

 tion and the Active Deposit produced by it . 370 



Dr. A. LI. Hughes on the Photo-electric Effect of some 

 Compounds 380 



J^)v. B. D. Kleeman : Fundamental Properties of the Equation 

 of State 391 



