Prof. G. W. O. Howe on the Relation of the Audibility Factor

of a Shunted Telephone to the Antenna Current as used

in the Reception of Wireless Signals. With Note by

Mr. van der Pol, junr...

Proceedings of the Geological Society:-

Page

131, 134

Mr. A. Holmes on the Pre-Cambrian and Associated

Rocks of the District of Mozambique...

.. 135

Dr. Felix Oswald on the Nimrud Crater in Turkish

Armenia....

Intelligence and Miscellaneous Articles :-

... 138

On Coupled Circuits and Mechanical Analogies, by

Sir G. Greenhill

140

NUMBER CCVI.—FEBRUARY.

Sir Oliver Lodge: Continued Discussion of the Astronomical

and Gravitational Bearings of the Electrical Theory of

Matter

141

Lord Rayleigh on the Lubricating and other Properties of

Thin Oily Films

157

Prof. Q. Majorana on the Second Postulate of the Theory of

Relativity: Experimental Demonstration of the Constancy

of Velocity of the Light reflected from a Moving Mirror.. 163

Mr. Prentice Reeves on the Visibility of Radiation

Prof. Andrew Gray on the Hodographic Treatment and the

Energetics of undisturbed Planetary Motion

174

.. 181

Mr. F. E. Wood: A Criticism of Wien's Distribution Law. 190

Prof. Barton and Miss Browning on Coupled Circuits and

Mechanical Analogies

203

Dr. W. F. Smeeth and Dr. H. E. Watson on the Radioactivity

of Archæan Rocks from the Mysore State, South India.... 206

Dr. S. R. Milner on the Effect of Interionic Force in

Electrolytes

214

Notices respecting New Books :-

Researches of the Department of Terrestrial Magnetism.

Vol. III. Ocean Magnetic Observations 1905-1916,

and Reports on Special Researches....

220

NUMBER CCVII.-MARCH.

Page

Mr. K. M. Deeley on Rain, Wind, and Cyclones

Prof. R. W. Wood on Resonance Spectra of Iodine. (Plates
VI.-VIII.)

221

236

Prof. R. W. Wood and Prof. M. Kimura on the Series Law

of Resonance Spectra

252

Dr. A. M. Tyndall and Miss N. S. Searle on the Pressure

Effect in Corona Discharge

261

270

Dr. Harold Jeffreys on some Problems of Evaporation

Dr. G. W. Todd on General Curves for the Velocity of

Complete Homogeneous Reactions between Two Substances

at Constant Volume. (Plate IX.)...

281

Prof. A. Anderson on the Coefficients of Potential of Two

Conducting Spheres....

286

Dr. L. Vegard on the X-Ray Spectra and the Constitution of

the Atom

293

Mr. G. W. Walker on Relativity and Electrodynamics.

(Plate X.).

327

Dr. H. Stanley Allen on Molecular Frequency and Molecular

Number...

338

Sir Joseph Larmor on Transpiration through Leaf-Stomata.. 350

Dr. S. R. Milner on the Effect of Interionic Force in

Electrolytes

352

Prof. G. N. Watson on Bessel Functions of Equal Order and

Argument

364

Notices respecting New Books:-

Prof. R. A. Millikan's The Electron: Its isolation and

measurement and the determination of some of its

properties ....

370

Napier Tercentenary Memorial Volume..

371

Modern Instruments and Methods of Calculation: A

Handbook of the Napier Tercentenary Exhibition 372

Prof. Harris Hancock's Elliptic Integrals (Mathematical

Monographs, No. 18).

372

NUMBER CCIX.-MAY.

Page

Lord Rayleigh on the Scattering of Light by a Cloud of

similar small Particles of any Shape and oriented at random. 373

Mr. G. A. Hemsalech on Fox Talbot's Method of obtaining

Coloured Flames of Great Intensity..

382

388

Prof. A. Anderson on the Problem of Two and that of Three

Electrified Spherical Conductors...

Mr. W. G. Bickley on some Two-Dimensional Potential

Problems connected with the Circular Arc

396

Dr. H. Stanley Allen on Molecular Frequency and Molecular

Number.-Part II. The Frequency of the Longer Residual

Rays

404

Dr. Harold Jeffreys on Wood's Criticism of Wien's Distri-

bution Law

410

Dr. H. E. Ives on the Resolution of Mixed Colours by

Differential Visual Diffusivity.

413

Prof. F. Y. Edgeworth: An Astronomer on the Law of

Error..

422

Dr. H. Jeffreys on Transpiration from Leaf-Stomata; with

Note by Sir J. Larmor

.431, 433

Dr. G. W. Todd on a Method of obtaining General Reaction-

Velocity Curves for complete Homogeneous Gas Reactions

at Constant Pressure

Notices respecting New Books:-

:-

435

Annuaire du Bureau des Longitudes pour l'année 1918. 444

Dr. F. L. Hitchcock on the Operator V in Combination with

Homogeneous Functions. Second Paper

NUMBER CCX.-JUNE.

Dr. H. Stanley Allen on Molecular Frequency and Molecular

Number.-Part III. Inorganic Compounds. Lindemann's

Formula..

445

461

Mr. A. O. Allen on Graphical Methods of correcting Tele-

scopic Objectives ..

471

Prof. A. S. Eddington on Electrical Theories of Matter and

their Astronomical Consequences with special reference to

the Principle of Relativity

481

Prof. G. W. O. Howe on the Relation of the Audibility

Factor of a Shunted Telephone to the Antenna Current

as used in the Reception of Wireless Signals....

Mr. R. F. Gwyther: A Doctrine on Material Stresses.

Prof. C. V. Raman on the Wolf-note in Bowed Stringed

487

490

Instruments

493

Mr. Nalinimohan Basu on a New Type of Rough Surface the

Motion of a Heavy Particle on which is determinable by

Quadratures

Page

496

Mr. W. G. Bickley on Two-Dimensional Motion of an Infinite

Liquid ..

500

Proceedings of the Geological Society:

Mr. L. Dudley Stamp on the Highest Silurian Rocks of

the Clun Forest District (Shropshire)...

502

Prof. W. Johnson Sollas on a Flaked Flint from the Red

Crag

503

Mr. R. Dixon Oldham : Some Considerations arising

from the Frequency of Earthquakes

504

Intelligence and Miscellaneous Articles :-

Index

On Relativity and Electrodynamics, by G. W. Walker.. 508

509

PLATES.

I. & II. Illustrative of Prof. Barton and Miss Browning's Paper on Variably-Coupled Vibrations: II. Unequal Masses or Periods. III. Illustrative of Mr. N. Basu's Paper on the Diffraction of Light by Cylinders of Large Radius.

IV. Illustrative of Prof. S. Banerji's Paper on Aerial Waves generated by Impact.

V. Illustrative of Mr. S. K. Mitra's Paper on the Asymmetry of the Illumination-Curves in Oblique Diffraction.

VI.-VIII. Illustrative of Prof. R. W. Wood's Paper on Resonance Spectra of Iodine.

IX. Illustrative of Dr. G. W. Todd's Paper on General Curves for the Velocity of Complete Homogeneous Reactions between Two Substances at Constant Volume.

X. Illustrative of Mr. G. W. Walker's Paper on Relativity and Electrodynamics.