CONTENTS OF VOL. XXXII. — SIXTH SERIES. Vll 



Page 



Notices respecting New Books : — 



Oliver Heaviside's Electromagnetic Theory 600 



Prof. W. C. M C C. Lewis's A System of Physical Che- 

 mistry 602 



Intelligence and Miscellaneous Articles : — 



Eefraction of X-Radiation, by Dr. H. B. Keene 603 



Additions to Prof. H. S. Carslaw's Paper on Napier's 

 Logarithms in the November Number 604 



Index 605 



PLATES. 



I. Illustrative of Br. M. Siegbahn and Mr. E. Friman's Paper on 

 the High-Frequency Spectra (L-Series) of the Elements 

 Tantalum-Uranium. 

 II. Illustrative of Prof. D. N. Mallik and Mr. A. B. Das's Paper on 

 Electric Discharge in a Transverse Magnetic Field. 



III. Illustrative of Dr. L. Vegard's Paper on Results of Crystal 



Analysis. 



IV. Illustrative of Mr. II. Ikeuti's Paper on the Tracks of the 



* Particles from Radium A in Sensitive Photographic Films. 

 V. Illustrative of Dr. E. J. Evans and Mr. C. Croxson's Paper on the 

 Stark Effect of the 4686 Spectrum Line. 

 VI. Illustrative of Prof. R. W. Wood and Mr. M. Kimura's Paper on 

 Scattering and Regular Reflexion ef Light by an Absorbing 

 Gas. 

 VII. Illustrative of Prof. R. W. Wood's Paper on the Condensation and 

 Reflexion of Gas Molecules. 

 VIII. Illustrative of Prof. C. T. Knipp and Mr. L. A. Welo's Paper on 

 a Wehnelt Cathode-Ray Tube Magnetometer. 

 IX. Illustrative of Prof. C. V. Raman's Paper on the " Wolf-note " in 



Bowed Stringed Instruments. 

 X. Illustrative of Mr. K. H. Kingdon's Paper on some Experiments 



on Residual Ionization. 

 XI. Illustrative of Dr. Einar Friman's Paper on the High-Frequency 



Spectra (L-Series) of the Elements Lutetium-Zinc. 

 XII. Illustrative of Dr. L. Vegard's Paper on Results of Crystal 

 Analysis. 



XIII. Illustrative of Mr. C. W. Raffety's Paper on some Investigations 



of the Spectra of Carbon and 'Hydrocarbon. 



XIV. Illustrative of Mr. A. P. Carman's Paper on the Collapse of 



Short Thin Tubes. 



