﻿CONTENTS OF VOL. XLIV 



(SIXTH SERIES). 



'■221. 



NUMBER CCLIX.— JULY 1922. 



Mr. A. R. McLeod on the Unsteady Motion produced in a Uniformly 

 Rotating Cylinder of Water by a Sudden Change in the Angular 



Velocity of the Boundary 1 



Dr. Norman Campbell on the Elements of Geometry 15 



Dr. Dorothy Written on the Rotation of Slightly Elastic Bodies ... 30 

 Mr. G. H. Henderson on the Straggling of ex. Particles by Matter . . 42 



Dr. G. Green on Fluid Motion relative to a Rotating Earth 52 



Prof. G. N. Antonoffon the Breaking Stress of Crystals of Rock-Salt. 62 



Dr. Norman Campbell on the Measurement of Chance 07 



Messrs. H. T. Tizard and D. R. Pye : Experiments on the Ignition 



of Gases by Sudden Compression. (Plate I ) 79 



Mr. C. Rodgers on the Vibration and Critical Speeds of Rotors. . . . 122 

 Mr. P. Cormack on Harmonic Analysis of Motion transmitted by 



Hooke's Joint 156 



Messrs. E. W. B. Gill and J. H. Morrell on Short Electric Waves 



obtained by Valves 161 



Sir George Greenhill on Pseudo-Regular Precession 179 



Dr. J. \Y. Nicholson on the Binding of Atoms by Electrons 193 



Mr. L. St. C. Broughall on Theoretical Aspects of the Neon Spectrum. 2U4 

 Dr. F. H. Newman on Absorption of Hydrogen by Elements in the 



Electric Discharge Tube 215 



Mr. B. A. M. Cavanagh on Molecular Thermodynamics. II 226 



Prof. J. G. Gray on the Calculation of Centroids 247 



Messrs. A. P. II. Trivelli and L. Righter : Preliminary Investiga- 

 tions on Silberstein's Quantum Theory of Photographic Exposure. 252 

 Dr. L. Silberstein on a Quantum Theory of Photographic Exposure. 257 

 Mr. R. F. Gwyther on an Analytical Discrimination of Elastic 



Stresses in an Isotropic Body 274 



Mr. II. S. Rowell on Damped Vibrations 284 



Notices respecting New Books : — 



Mr. L. F. Richardson's Weather Prediction by Numerical 



Process 285 



Proceedings of the Geological Society : — 



Mr. C. E. No will Bromehead on the Influence of Geology on 



the History of London 286 



Intelligence and Miscellaneous Articles-. — 



On Young's Modulus and Poisson's Ratio for Spruce, by Mr. II. 

 Carrington 288 



