No. 816. - April 21. 1931. |
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| Explosions of Mixtures of Acetylene and Electrolytic Gas. By W. A. Bone, F.R.S., R. P. Fraser and F. Lake. (Plates 1-3.) | |
| The Adsorption of Substances by Fuller's Earth. By H. J. Phelps. Communicated by C. N. Hinshelwood, F.R.S. | |
| 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. | |
| The Diurnal Tide in an Ocean bounded by Two Meridians. By D. C. Colborne. Communicated by G. R Goldsbrough, F.R.S. | |
| 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. | |
| The Upper Limit of Energy in the Spectrum of Radium E. By F. R. Terroux. (Plate 5.) Communicated by Lord Rutherford, F.R.S. | |
| The Arithmetically Reduced. Indefinite Quadratic Form in n-Variables. By L. J. Mordell, F.R.S. | |
| The Spectrum of Singly Ionised Antimony. By D. G. Dhavale, Communicated by M. N. Saha, F.R.S. | |
| The Development of a High Speed Wind Channel for Research in External Ballistics. By Sir Thomas F. Stanton, F.R.S., (Plate 6.) | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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) | |
| 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.) | |
| 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.) | |
| 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.) | |
No. 817. - May 1. 1931. |
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| The Wave Resistance of a Spheroid. By T. H. Havelock, F.R.S. | |
| On Twisted Cubic Curves which satisfy Twelve Conditions. By J. A. Todd. Communicated by H. F. Baker, F.R.S. | |
| On the Transmission of Light by Thin Films of Metal. By S. Rama Swamy. (Plate 14.) Communicated by W. Wilson, F.R.S. | |
| On the Thermal Conductivity of some Metal Wires. By W. G. Kannuluik. Communicated by Lord Rutherford, F.R.S. | |
| Material and Radiational Waves. By A. M. Mosharrafa. Communicated by O. W. Richardson, F.R.S. | |
| The Chemical Constant of Chlorine Vapour and the Entropy of Crystalline Chlorine. By T. E. Stern. Communicated by R. H. Fowler, F.R.S. | |
| 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. | |
| 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.) | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| The Scattering of Light by Turbid Media. - Part I. By J. W. Ryde. Communicated by R. H. Fowler, F.R.S. | |
| 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. | |
| X-Ray Nondiagram Lines. By G. B. Deodhar. Communicated by O. W. Richardson, F.R.S. | |
| 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 | |
No. 818. - June 3. 1931. |
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| On the Periodicity in Series of Related Terms. By Sir Gilbert Walker, F.R.S. | |
| Ethyl Alcohol. A Product of High Pressure Syntheses. By G. T. Morgan, F.R.S., and R. Taylor | |
| The Decay Constant of Uranium II. By C. H. Collie. Communicated by F. A. Lindeman, F.R.S. | |
| The Reflection of Vapour Molecules at a Liquid Surface. By T. Alty. (Plate 23.) Communicated by Sir Joseph Thomson, F.R.S. | |
| 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 | |
| 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. | |
| 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. | |
| 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. | |
| An X-Ray Study of Mannitol, Dulcitol, and Mannose. By T. C. Marwick, (Plate 28.): Communicated by Sir William Bragg, F.R.S. | |
| 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. | |
| 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. | |
| 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. | |
| The Spectrum of H2. - The Bands ending on 2p3 II Levels. By O. W. Richardson, F.R.S., and P. M. Davidson | |
| Analysis of the Long Range x-Particles from Radium C. By Lord Rutherford, F.R.S. | |
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OBITUARY NOTICES.
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| Alfred Bernard Basset | |
| Lord Melchett (with portrait) | |
| Sir Charles Parsons (with portrait) | |
| Index | |