CONTENTS.
SERIES A. VOL. CXXXI.
No. 816. - April 21. 1931.
Explosions of Mixtures of Acetylene and Electrolytic Gas. By W. A. Bone, F.R.S., R. P. Fraser and F. Lake. (Plates 1-3.)
1
The Adsorption of Substances by Fuller's Earth. By H. J. Phelps. Communicated by C. N. Hinshelwood, F.R.S.
17
The Solution of the Torsion Problem for Circular Shafts of Varying Radius, By A. Thom and J. Orr. Communicated by R. V. Southwell, F.R.S.
30
The Diurnal Tide in an Ocean bounded by Two Meridians. By D. C. Colborne. Communicated by G. R Goldsbrough, F.R.S.
38
The Pressure Exerted by Granular Material: an Application of the Principles of Dilatancy. By C. F. Jenkin. (Plate 4.) Communicated by Sir Alfred Ewing, F.R.S.
53
The Upper Limit of Energy in the Spectrum of Radium E. By F. R. Terroux. (Plate 5.) Communicated by Lord Rutherford, F.R.S.
90
The Arithmetically Reduced. Indefinite Quadratic Form in n-Variables. By L. J. Mordell, F.R.S.
99
The Spectrum of Singly Ionised Antimony. By D. G. Dhavale, Communicated by M. N. Saha, F.R.S.
109
The Development of a High Speed Wind Channel for Research in External Ballistics. By Sir Thomas F. Stanton, F.R.S., (Plate 6.)
122
The Effect of Combined Electric and Magnetic Fields on the Helium Spectrum. - II. By J. S. Foster. (Plates 7 and 8.) Communicated by A. S. Eve, F.R.S.
133
Stark Effect in Molecular Hydrogen in the Range 4100-4770 A. By J. K. L. MacDonald (Plate 9.) Communicated by A. S. Eve, F. R.S.
146
Investigations on the Spectrum of Selenium. Part I. - Se IV and Se V. By K. R. Rao and J. S. Badami. (Plates 10 and 11.) Communicated by A. Fowler, F.R.S.
154
A Metrical Theory and its Relation to the Charge and Masses of the Electron and Proton. By H. T. Flint. Communicated by O.W.Richardson, F.R.S.
170
The Kinetics of Reactions in Solution. Part I. - A Comparison of the Decomposition of Chlorine Monoxide in the Gaseous State and in Carbon Tetrachloride Solution. By E. A. Moelwyn Hughes and C. N. Hinshelwood, F.R.S.
177
The Kinetics of Reactions in Solution. Part II. - The Decomposition of Trinitrobenzoic Acid in Various Solvents. By E. A. Moelwyn-Hughes and C. N. Hinshelwood, F.R.S.
186
The Forces on a Solid Body Moving through Viscous Fluid. By S. Goldstein. With notes in the text by J. M. Burgers. Communicated by H. Jeffreys, F.R.S.
198
The Magnetic Susceptibility of Binary Systems of Organic Liquids. By Miss V.C.G. Trew and J. F. Spencer. Communicated by W. Wilson, F.R.S.
209
The Study of the Magnetic Properties of Matter in Strong Magnetic Fields. - I. The Balance and its Properties. By P. Kapitza, F.R.S. (Plate 121)
224
The Study of the Magnetic Properties of Matter in Strong Magnetic Fields. Part II. - The Measurement of Magnetisation. By P. Kapitza, F.R.S. (Plate 13.)
243
The Antiseptic and Trypanocidal Action of certain Styryl and Anil Benzthiazole Derivatives. By C. H. Browning, F.R.S., J. B. Cohen, F.R.S., Ellingworth and R. Gulbransen. (Abstract.)
273
Some Aliphatic and Aromatic Amino Derivatives of x-Quinoline Methiodide. By J. B. Cohen, F.R.S., K. E. Cooper and P. G. Marshall. (Abstract.)
274
No. 817. - May 1. 1931.
The Wave Resistance of a Spheroid. By T. H. Havelock, F.R.S.
275
On Twisted Cubic Curves which satisfy Twelve Conditions. By J. A. Todd. Communicated by H. F. Baker, F.R.S.
286
On the Transmission of Light by Thin Films of Metal. By S. Rama Swamy. (Plate 14.) Communicated by W. Wilson, F.R.S.
307
On the Thermal Conductivity of some Metal Wires. By W. G. Kannuluik. Communicated by Lord Rutherford, F.R.S.
320
Material and Radiational Waves. By A. M. Mosharrafa. Communicated by O. W. Richardson, F.R.S.
335
The Chemical Constant of Chlorine Vapour and the Entropy of Crystalline Chlorine. By T. E. Stern. Communicated by R. H. Fowler, F.R.S.
339
The Velocity of Corrosion from the Electrochemical Standpoint. By U. R. Evans, L. C. Bannister and S. C. Britton. Communicated by Sir Harold Carpenter, F.R.S.
355
On a Night Sky of Exceptional Brightness. and on the Distinction between the Polar Aurora and the Night Sky. By Lord Rayleigh, For. See. R.S. (Plate 15.)
376
The Behaviour of Electrolytes in Mixed Solvents. Part III. - The Molecular Refractivities and Partial Molar Volumes of Lithium Chloride in Water-Ethyl Alcohol Solutions. By J. A. V. Butler and A. D. Lees. Communicated by J. Kendall, F.R.S.
382
Valve Methods of Recording Single Alpha-Particles in the presence of Powerful Ionising Radiations. By C. E. Wynn-Williams and F. A. B. Ward. Communicated by Lord Rutherford, F.R.S.
391
Viscosity and Rigidity in Suspensions of Fine Particles. I. - Aqueous, Suspensions. By C. M. McDowell and F. L. Usher. Communicated by R. Whytlaw-Gray, F.R.S.
409
Optical and Equivalent Paths in a Stratified Medium, Treated from a Wave Stand-point. By D. R. Hartree. Communicated by E. V. Appleton, F.R.S.
428
The Scattering of Light by Turbid Media. - Part I. By J. W. Ryde. Communicated by R. H. Fowler, F.R.S.
451
The Scattering of Light by Turbid Media. - Part II. By J. W. Ryde and B. S. Cooper. Communicated by R. H. Fowler, F.R.S.
464
X-Ray Nondiagram Lines. By G. B. Deodhar. Communicated by O. W. Richardson, F.R.S.
476
The Theory of Metallic Corrosion in the Light of Quantitative Measurements. - Part IV. By G. D. Bengough, A. R. Lee and F. Wormwell. (Plates 16-22.) Communicated by Sir Harold Carpenter, F.R.S
494
No. 818. - June 3. 1931.
On the Periodicity in Series of Related Terms. By Sir Gilbert Walker, F.R.S.
518
Ethyl Alcohol. A Product of High Pressure Syntheses. By G. T. Morgan, F.R.S., and R. Taylor
533
The Decay Constant of Uranium II. By C. H. Collie. Communicated by F. A. Lindeman, F.R.S.
541
The Reflection of Vapour Molecules at a Liquid Surface. By T. Alty. (Plate 23.) Communicated by Sir Joseph Thomson, F.R.S.
554
Viscosity and Rigidity in Suspensions of Fine. Particles. II. - Non-Aqueous Suspensions. By C. M. McDowell and F. L. Usher. (Plates 24-26.) Communicated by R. Whytlaw-Gray, F.R.S
564
The Colloid Chemistry of Dyes: the Aqueous Solutions of Benzopurpurine 4 B and its Isomer prepared from m-Tolidine. - Part I. By C. Robinson and H. A. T. Mills. Communicated by F. G. Donnan, F.R.S.
576
The Colloid Chemistry of Dyes: the Aqueous Solutions of Benzopurpurine 4 B and its Isomer prepared from m Tolidine-Part II. By C. Robinson and H. A. T. Mills. Communicated by F. G. Donnan, F.R.S.
596
The Molecular Symmetry of Hexa-aminobenzene in the. Crystalline State, and certain other Properties of the Substance. By I. E. Knaggs. (Plate 27.) Communicated by Sir William Bragg, F.R.S.
612
An X-Ray Study of Mannitol, Dulcitol, and Mannose. By T. C. Marwick, (Plate 28.): Communicated by Sir William Bragg, F.R.S.
621
Some Investigations in Röntgen Spectra. Part I. - X-Ray Spark Lines. By G. B. Deodhar. (Plate 29.) Communicated by O. W. Richardson, F.R.S.
633
Some Investigations in Röntgen Spectra. Part II. - X-Ray Spectra and Chemical Combination. Sulphur. By G. B. Deodhar. (Plates 30, 31.) Communicated by O. W. Richardson, F.R.S.
647
Some Investigations in Röntgen Spectra. Part III. - Fine Structure of K-Absorption Edge of SiO2. By G. B. Deodhar. Communicated by O. W. Richardson, F.R.S.
654
The Spectrum of H2. - The Bands ending on 2p3 II Levels. By O. W. Richardson, F.R.S., and P. M. Davidson
658
Analysis of the Long Range x-Particles from Radium C. By Lord Rutherford, F.R.S.
684
OBITUARY NOTICES.
Alfred Bernard Basset
i
Lord Melchett (with portrait)
ii
Sir Charles Parsons (with portrait)
v
Index