vi CONTENTS OF VOL. VII.—SIXTH SERIES. 
Page 
Mr. W. Sutherland on the Crémieu-Pender Discovery ...... 405 
Mr. H. Darwin on an Electric Thermostat. (Plate XXIV.) . 408 
Notices respecting New Books :— 
Dr. Johannes Stark’s Die Dissoziierung und Umwandl- 
wag Chemischer Atome *........ ~./c0 gmieteeieeeen 414 
Proceedings of the Geological Society :— 
Lieut.-Col. T. English on Eocene and Later Formations 
surrounding the Dardanelles... ..... 408 ae 414 
Dr. C. Davison on the Derby Earthquakes of March 24th 
and May 3rd, 1903" ..... 24.4... 00- 6 (poe 416 
NUMBER XLI.—MAY. 
Mr. W. Sutherland on the Electric Origin of Rigidity and 
Consequences . .. sj: sidag - ees eee dine & pie aagnuae sc ee 
Prof. H. Nagaoka on ue Kinetics of a System of Particles 
illustrating the Line and the Band Spectrum and the Pheno- 
meéna of Radwactivity 2-2 yada de ko eee 4435 
Mr. KR, A. Houstoun’s Spectroscopic Notes”... 1... .:6.e ee 456 
Mr. 8. H. Burbury on the Kinetic Theory of Gases ...... 467 
Mr. R. Hosking on the Electrical Conductivity and Fluidity 
of Solutions .. | .=\...cega sek eelare eee ee eee 469 
Mr. J. Barnes on the Analysis of Bright Spectrum Lines. 
(Plates XX-V. di XX Val) Rae eal. ee Aedes ee 485 
Dr. C. Chree on the Whirling and Transverse Vibrations of 
Rotating Shafts. :) tie) Oa do eee eer 504 
Mr.C.G. Barkla on the Energy of Secondary Rontgen Radiation 543 
Mr. 8. C. Laws on the Thomson Effect in Ailoys ot Bismuth 
Nav led br) cae 8 eee be 4 RE 560 
Prof. J. Larmor on the Intensity of the Natural Radiation 
from Moving Bodies and its Mechanical Reaction........ 578 
Prof. J. A. Fleming on the Measurement of Small Inductances 
and Capacities, and on a Standard of Small Inductance .. 586 
Prof. J. A. Fleming on a Hot-Wire Ammeter for the Measure- 
ment of very small Alternating Currents .......2. 026 595 
Notices respecting New Books :— 
Mr. E. T. Whittaker’s Course of Modern Analysis .... 605 
Mr. H. Hilton’s Mathematical Crystallography and the 
Theory of Groups of Movements ie )@ 2/2)... (4. «+ eae 605 
Prof. P. Duhem’s Thermodynamics and Chemistry .... 606 
Prof. 8S. Young’s Fractional Distillation.............. 607 
Intelligence and Miscellaneous Articles :— 
An Instrument for Drawing Conics, by Mr. J. R. Cotter. 608 
