Volume Information Source: Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, Vol. 79, No. 527 (Mar. 12, 1907), pp. i-vii Published by: The Royal Society Stable URL: http://www.jstor.org/stable/92808 . Accessed: 07/05/2014 16:34 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. . The Royal Society is collaborating with JSTOR to digitize, preserve and extend access to Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character. http://www.jstor.org This content downloaded from 169.229.32.136 on Wed, 7 May 2014 16:34:54 PM All use subject to JSTOR Terms and Conditions
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Volume InformationSource: Proceedings of the Royal Society of London. Series A, Containing Papers of aMathematical and Physical Character, Vol. 79, No. 527 (Mar. 12, 1907), pp. i-viiPublished by: The Royal SocietyStable URL: http://www.jstor.org/stable/92808 .
Accessed: 07/05/2014 16:34
Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp
.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact [email protected].
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The Royal Society is collaborating with JSTOR to digitize, preserve and extend access to Proceedings of theRoyal Society of London. Series A, Containing Papers of a Mathematical and Physical Character.
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This content downloaded from 169.229.32.136 on Wed, 7 May 2014 16:34:54 PMAll use subject to JSTOR Terms and Conditions
Address of the President, Lord Rayleigh, O.M., D.C.L., at the Anniversary Meeting on November 30, 1906 .............................. ................................. 1
A Comparison of Values of the Magnetic Elements, deduced from the British Magnetic Survey of 1891, with Recent Observation. By William Ellis, F.R.S. 13
On the Intensity of Light Reflected from Transparent Substances. By Richard C. Maclaurin, M.A., LL.ID., late Fellow of St. John's College, Caimbridge; Professor of Mathematics, Wellington, New Zealand. Communicated by Professor J. Larmor, Sec. R.S ................................................................... 18
The Electric or Magnetic Polarisation of a Thin Cylinlder of Finite Length by a Uniifornm Field of Force. By T. H. Havelock, M.A., D.Sc., Fellow of St. John's College, Cambridge, Lecturer in Applied Mathematics in Armstrong College, Newcastle-on-Tyne. Commnnunicated by Professor J. Larmor, Sec. R.S ............. 31
The Velocity of the Negative Ions in Flanies. By E. Gold, B.A., Fellow of St. John's College, Cambridge; Wheatstone Laboratory, King's College, London. Commi-unicated by Professor II. A. Wilson, F.R.S. ......... ............... 43
On a New Iron Carboniyl, and on the Action of Light and of Heat on the Iron Carbonyls. By Sir Jaines Dewar, M.A., Sc.D., LL.D., F.R.S., Jacksonian Professor in the University of Cambridge, and Humphrey Owen Jones, M.A., D.sc., Fellow of Clare College, anid Jacksonian Demonstrator in the University of Cambridge ................................................................... 66
No. A 528.-April 24, 1907.
Experimenits on the Length of the Cathode Dark Space with Varying Current Densities and Pressures in Different Gases. By Francis Willianm Aston, A.I.C., Research Scholar at the University of Birmiinghamn. Coimmunicated by Professor J. H-I. Poynting, F.R.S. ........................... ................... . 80
On the Discharge of Negative Electricity fromi Hot Calcium and from Linme. By Fraink Horton, D.Sc., -B.A., Fellow of St. Joln's College, Cambridge. Com- municated by Professor J. J. Thomson, F.PR.S. (Abstract) ............................ 96
Experiments on the Dark Space in Vacuumr Tubes. By Sir William Crookes, D.Sc., F.R.S. . 98
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PAGE On the Presence of Europium in Stars. By Joseph Lunt, B.Sc., F.I.C., Assistant
at the Royal Observatory, Cape of Good Hope. Communicated by Sir David Gill, K.C.B., F.R.S., l.M. Astronomer ..............................,.,.,.,.118
Note on the Application of Van der Waals' Equation to Solutions. By the Earl of Berkeley. Communicated by Professor J. Larmtior, Sec. R.S . ........................ 125
The Thermonmagnetic Analysis of Meteoric and Artificial Nickel-Iron Alloys. By S. W. J. Smith, M.A., A.R.C.S., Royal College of Science, London. Commnuni- cated by Sir Arthur W. Riicker, F.R.S. (Abstract) .................................... 132
The Occlusion of the Residual Gas by the Glass Walls of Vacuum Tubes. By A. A. Campbell Swinton. Conulnunicated by Sir William Crookes, F.R.S . 134
A Recording Calorimeter for Explosions. By Bertram Hopkinson, Professor of Mechanism and Applied Mechanics in the University of Cambridge. Com- muinicated by Pirofessor 11. L. Callendar, F.R.S. (Plate 1) ........................... 138
Electric Furnace Reactions under High Gaseous Pressures. By R. S. H{utton anld J. E. Petavel. Comimunicated by Professor A. Schuster, F.R.S. (Abstract) ... 155
No. A 529.-May 14, 1907.
On the Effect of High Temiiperatures on Radium Emaniation and its Products. By Walter Makower, Assistanlt Lecturer in Physics; alnd Sidiney Russ, Demonstrator in Pbysics in the University of Malichester. Communicated by Professor Arthur Schuster, F.R.S. ................. . . . . ............ 158
On the Purificationi anid Testinig of Selenioin. By R. Thlrelfall, F.R.S . .................. 167
On the Specific Ind(luctive Capacity of a Sample of Highly Purified Seleiiion. By 0. U. Vonwiller, B.Sc., Demonstrator in Plhysics, and W. H. Mason, BI.Sc., Deas-Thomison Scholar in Physics in the Uniiversity of Sydney. Commlunicated by R. Threlfall, F.R.S ............... 175
On the Theory of Clorrelation for any Nulmber of Variables, treated by a New Systenm of Notation. By G. Udny Yule, Newniarch Leetuirer on Statistics, University College, London. Communi-iicated by Professor 0. Henirici, F.R.S.... 182
The Gravitational. Stability of the Eartlh. By A. E. 11. Love, F.R.S., Sedleian Professor of Natural Philosophy in the UnTiversity of Oxford. (Abstract) ...... 194
On the Dispersion of Artificial Double Refractioni. By L. N. G. Filon, M.A., D.Sc., Fellow and Lecturer in Mathematics of Uniiversity College, London. Com- nmunicated by Professor F. T. Trouton, F.R.S. (Abstract) ........................... 200
On the Refractive Inidices of Gaseous Potassium, Zin,e Cadmiium, Mercury, Arsenic, Selenium, and Telluriunm. By C. Cuthbertsou and E. Parr Metcalfe, B.Sc. Communicated by- Professor Trouton, F.1R.S. (Abstract) .202
On the Absorptionl of Water by Cot'ton' and Wool. By Morris W. Travers, D.Sc., F.R.S., Director of the Inidian Institute of Science, Bangalore ........................ 204
The Total loiuisation of Various Gases by the a-Rays of Uranium. By T. HI. Laby, 1851 Exhibition Research Scholar of the Uniiversity of Sydniey; Emmanuel College, Caambridge. (Conmnmunicated by Professor J. J. Thomson, F.R.S .......... 206
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and y-Rays. Ay ER. D. Kleeman, B.Sc., 1851 Exhibition Research Scholar of the UIniversity of Adelaide; Emmaniuel College, Cambridge. Communicated by Professor J. J. Thomson, F.R.S .......... 220
On the Explosion of, Pure Electrolytic Gas. By Harold B. Dixon, M.A., F.R.S., Professor of Chemistry, and Lawreniee Bradshaw, M.Sc., late Dalton Scholar of the University of Manichester. (Plates 2 and 3) .......................................... 234
The Firing of Gaseous Mlixtures by Compression. By Lawrence Bradshaw, M.Sc., Ph.D. Communicated by Professor H. B. Dixoni, F.R.S. (Plate 3) ....... ........ 236
No. A 530.-June 8,1907.
On the Thermo-chemistry of Flame Spectra at High Temperatures. By W. N. Hartley, F.R.S., D.Sc., Royal College of Science, Dublin ......... ..................... 242
On the Resistanice of Air. By A. Mallock, F.R.S .. ............................................. 262
Space described in a Given Time by a Projectile Moving in Air. By A. Mallock, F.R.S ..................................................................... 274
On the Variation of the Pressure developed during the Explosion of Cordite in Closed Vessels. By Charles H. Lees, D.Sc., F.R.S., Professor of Physics in the East London College, and J. E. Petavel, MI.Sc., Lecturer on Mechanics in the University of Manchester .................................................................... 277
Experiments witlh Vacuunm Gold-leaf Electroscopes on the Mechanical Ternperature Effects in Rarefied Gases. By J. T. Bottomley, MI.A., LL.I)., D.Sc., F.R.S., and F. A. King ....................... ............................................. 285
Report of Private Expeditioni to Philippeville, Algeria, to -view the Total Eclipse of the Sun, August 30, 1905. By T. C. Porter, M. A., D.Sc., F.R.A.S., etc., and W. P. Colfox. (Plates 4 and 5) ............................................................... 296
Chemical Reactioin betweeni Salts in the Solid State. By Edgar Philip Perman. Conmmunicated bv Principal E. H. Gri;ffiths, F.R.S. ........... ......................... 310
Constants of Explosion of Cordite and of Modified Cordite. By Ptobert Robertson, M.A., D.Sc. Communicated by Col. H:olden, RN.A, F.R.S. (Abstract) ............ 320
No. A 531.--July 10, 1907.
'Tlbe Spontaneous Crystallisationi of Biniary Mixtures.-Experimenlts oln Salol and Betol. By H. A. Miers, M.A., D.Sc., F.1R.S., Waynflete Professor of Mineralogy in the 'University of Oxford, and. Miss F. Isaac, Research Fellow of Somerville College ............................................................................ 322
The Relation of Thallium to thle Alkali Metals: a Study of Thallium Sulphate and Selenate. By A. E. fI. Tutton, M. A.., ]).Sc., F.R.S ..................................... 351
On the Two Modes of Condenisation of Water Vapour on Glass Surfaces, and their Analogy withi Janmes Thomlsoil's CuLlrve of Tranisition- fromn Gas to Liqutid. By Professor Fred. T. Trouton, F.R.S ......................................... 383
The Mechanical Vffects of Canal Rays. -By A. A. Cam.pbell Swinton. Comniiiuni- cated by Sir Williain Crookes, I?.IR.S ......................................... 391
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PAGE The Distribution of Blue and Violet Light in the Corona on Auguist 30, 1905, as
deriveed from Photographs taken at Kalaa-es-Senam, Tunisia. By Dr. L. Becker, Professor of Astronomy, University of Glasgow. Communicated by the Joint Permainent Eclipse Comnmittee. (Abstract) ................. ............................... 395
Investigation of the Law of Burning of Modified Cordite. By Major J. H. Mansell, Royal Artillery. Communicated by Sir A. Noble, F.R.S. (Abstract) ....... ..... 397
No. A 532.-August 2, 1907.
On the Dynamical Theory of Gratings. By Lord Rayleigh, O.M., Pres. R.S . ......... 399
On the Velocity of Rotation of the Electric Discharge in Gases at Low Pressures in a Radial Magnetic Field. By Professor H. A. Wilson, F.R.S., and G. H. Martyn, B.Sc., Wlheatstone Laboratory, King's College, London ..................... 417
On a Standard of Mfutual Inductance. By Albert Campbell, B.A. Conmmunicated by Dr. B. T. Glazebr ook, F.R.S . ... ............................................................ 428
On the Origin of the Gases evolved by Mineral Springs. By the Hon. R. J. Strutt, F.R.S ..................................................................... 436
Preliminary Note on a New Method of Measuring directly the Double-refraction in Strained Glass. By L. N. G. Filon, M.A., D.Sc., Fellow and Lecturer of University College, London. Communicated by Professor F. T. Trouton, F.R.S ..................................................................... 440
On the Velocity of the Cathode Particles einitted by Various Metals under the Influence of R6ntgen Rays, and its Bearing on the Theory of Atomic Disinte- gration. By P. D. Ilines, M.A., B.Sc., 1851 Exhibition Scholar of tlle University of Edinburgh; Trinity College, Cambridge. Communicated by Professor J. J. Thomson, F.R.S . ................................................................ 442
The Hard and Soft States in Ductile Metals. By G. T. Beilby, F.R.S. ....... ........ 463
No. A 533.-September 6, 1907.
On Light Elliptically Polarised by Reflexion, especially near the Polarisinig Angle a Comparison with Theory. By Richard C. Maclaurin, M1.A., LL.D., late Fellow of St. John's College, Cambridge, Professor of Mathematics, Wellington, New Zealand. Communicated by Professor J. Larmior, Sec. R.S .1.................. 481
The Fluted Spectrum of Titanium Oxide. By A. Fowler, A.R.C.S., F.R.A.S., Assistant Professor of Physics, Royal College of Scienice, South Kensington. Conmmunicated by H. L. Callendar, M.A., LL.D., F.R.S., Professor of Physics, Royal College of Science, SW . (Plate 6) ................. ............................... 509
The Osrnotic Pressure of Coinpressible Soltutions of any Degree of Concentration. By Alfred W. Porter, B.Sc., Fellow of, and Assistant-Professor of Physics in, University College, London. Communicated by Professor F. T. Trouton, F.R.S. 519
Note on the Use of the Radiomneter in Observing, Small Gas Pressures ; Application to the Detection of the GCaseous- Products produced by Radio-active Bodies. By Sir James Dewar, M.A., Sc.D., LL.D., F.R.S . ............................................. 529
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Ranges and Behaviour of Rifled Projectiles in Air. By A. Mallock, F.R.S. ......... 536
On the Force requiired to Stop a Moving Electrified Sphere. By G. F. C. Searle, M.A., F.R.S., University Lecturer in Experimental Physics, Cambridge ......... 550
No. A. 534.- September 27, 1907.
Studies of the Processes operative in Solutionis.-Parts II-V. By H. E. Armnstrong, F.R.S., and others .................................................................... 564
The Effect of Pressure upon Arc Spectra. No. I.-Iron. By W. Geoffrey Duffield, B.Sc., B.A. Communicated by Professor A. Schuster, F.R.S. (Abstract) ...... 597
Index .................................................................... 601
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