﻿IV CONTENTS OF VOL. XXIX. SIXTH SERIES. 



Page 

 Mr, N. P. K. J. 0'JN T . McCleland : A Study of the Absorp- 

 tion Spectra of Organic Substances in the Light of the 



Electron Theory 192 



Notices respecting New Books : — 



Dr. J. E. Kippax's The Call of the Stars 206 



Proceedings of the Geological Society : — 



Dr. A. Dunlop on aEaised Beach on the Southern Coast 



of Jersey 207 



Prof. S. J. Shand on Tachylyte Veins and Assimilation 

 Phenomena in the Granite of Parijs (Orange Free 



State) 207 



Intelligence and Miscellaneous Articles : — 



Pressure of Eadiation on a Eeceding Beflector : Corri- 

 genda, by Sir J. Larmor 208 



NUMBEE CLXX.— FEBEUAEY. 



Lord Eayleigh on some Problems concerning the Mutual 



Influence of Eesonators exposed to Primary Piane Waves. 209 

 Prof. E. C. C. Baly on Light Absorption and .Fluorescence. — 



Part II 223 



Prof. H. Nagaoka and Mr. T. Takamine: Anomalous Zeeman 



Effect in Satellites of the Violet Line (4359) of Mercury. 



(Plates III. & IV.) 241 



Mr. H. P. Walmsley and Dr. W. Makower on the Mngnetic 



Deflexion of the Eecoil Stream from Eadium A. (Plate V. 



fig. 1) 253 



Mr. N. Tunstall and Dr. W. Makower on the Velocity of 



the a Particles from Eadium A. (Plate V. fig. 2.) ...... 259 



Mr. W. Morris Jones : Frictional Electricity on Insulators 



and Metals 261 



Lord Eayleigh on the Widening of Spectrum Lines 274 



Mr. E. J. Evans on the Spectra of Helium and Hydrogen. 



(Plate VI.) ; . . . .' 284 



Profs. P. Ehrenfest and H. Kamerlingh Onnes on a Simplified 



Deduction of the Formula from the Theory of Combinations 



which Planck uses as the Basis of his Eadiation Theory . . 297 



Mr. P. G. Nutting on the Visibility of Eadiation 30l 



Dr. A. C. Crehore on the Gyroscopic Theory of Atoms and 



Molecules 310 



Dr. N. Bohr on the Series Spectrum of Hydrogen and the 



Structure of the Atom 332 



Notices respecting New Books : — 



Dr. L. Silber&tein's The Theory of Eelativitv 335 



