Judex 



J. ..I.. I', 4.-,;; uii iliu Cuiisliuuion uj ilic Atom, Prof. | 

 Kuiliurtord, 457; Lord Kelvin, 457; Sir O. Lodge, j 

 ^^7 ; Ssir Will. Ramsay, 45S ; 1". Soddy, 458 ; G. A. 

 Scliott, 458 ; Prof. Larmor, 45S ; Radium Emanation, 

 .Sir Wni. Ramsay, 458 ; on Pseudo-high Vacua, F. 

 Soddy and T. D. M^jclienzie, 458 ; Range of I'lcedom 

 of Electrons in Metals, Prof. Larmor, 458 ; Optical 

 Pyromctry, Dr. L. Holborn, 45S ; Prof. C. Fiiry, 458 ; 

 Dr. Harker, 458 ; 'I'hoory of Functions of a Real 

 Variable, Dr. W. H. Young, 458 ; Remarkable 

 Periodic Solution of the Restricted Problem of Three 

 Bodies, Dr. \V. de Sitter, 458; on Essentially Double 

 Integrals and the Part which they Play in the Theory 

 of Integral Equations, H. Bateman, 45S ; on the Best 

 Methods of Introducing Certain Fundamental Resuits 

 in .\nalysis, Prof. Love, 459 ; Dr. Voung, 459 ; on the 

 Transmission of the Active Deposit from Radium 

 ICmanation to the .Anode, Sidney Russ, 459 ; the 

 .\bsorption of .\rgon by Charcoal, Miss I. Homfray, 

 459 ; on the Density of the Ether, Sir Oliver Lodge, 

 4.;9 : an Electrical Experiment illustrating the Two 

 Modes of Condensation of Water Vapour upon Sur- 

 faces, Prof. Trouton, 459 ; a Theoretical Method of 

 .\ttcmpting to Detect Relative Motion between the 

 i;thcr and the Earth, A. O. Rankine, 459 ; Sir Oliver 

 Lodj;c, 459; Prof. Trouton, 459; on the Nature of 

 lonisation, Prof. H. E. .Armstrong, 459; Sir O. Lodge, 

 459 ; Prof. Abegg, 460 ; Dr. T. M. Lowry, 460 ; Dr. 

 Scnter, 460 ; Dr. N. T. M. Wilsmore, 460 ; Dr. Haber, 

 460 ; Production and Origin of Radium, Prof. Ruther- 

 ford, 460 ; Effect of High Temperatures on the .Activity 

 of the Products of Radium, Prof. Rutherford and J. E. 

 Pet.ivel, 460 ; Mr. Makower, 461 ; Mr. Russ, 461 ; 

 Modern Methods of Treating Observations, W. Palin 

 Elderton, 461 ; Dr. W. N. Shaw, 461 ; G. Udny Yule, 

 461 ; A. R. Hinks, 461 ; on the Use of Calcite in 

 Spectroscopy, Prof. Hicks, 461 ; V'ariabilitv in Light 

 of Mira Ceti and the Temperature of .Sun-spots, Rev. 

 .A. L. Cortie, 461 ; Determination of Periodicity from 

 a Broken Series of Maxima, Prof. H. H. Turner, 461 ; 

 on the Introduction of the Mathematical Idea of In- 

 finity, Dr. W. H. Young, 461 : Models of Three- 

 dimensional Sections of Regular Hyper-solids in Four 

 Dimensions, Mrs. Boole-Stott, 461 ; Prof. Schoute, 

 461 : the Fact that the Impact of a Drop Excavates 

 a Perfectly Spherical Hollow, Prof. A. M. Worth- 

 ington, 461 



Section B (Chcinistrv) — Opening .\ddress bv Prof. A. 

 Smithells, B.Sc, F.R.S., President of the .Section, 

 352 ; on Valcncv, Prof. Pope, 482 ; W. M. Barlow, 

 482 ; Prof. Sollas, 4S2 ; Prof. Miers, 4S2 ; Dr. Tutton, 

 482 ; Prof. Abegg, 482 ; Prof. Tilden, 482 ; Prof. 

 Larmor, 4S2 ; the Ignition Point of Various Gases 

 and Mixtures, Prof. Dixon, 482 ; Dugald Clerk, 482 ; 

 on Iron Carbonyls, Dr. II. O. Jones, 482 : Sir James 

 Dewar, 482 ; Conductivity of Electrolytes in Pyridine, 

 Dr. K.. S. Caldwell, 483 ; Report on the .Applications 

 of Grignard's Interaction, Dr. .\lex. McKenzie, 4,83 ; 

 Copper Mirrors discovered in the Course of an Investi- 

 gation on the Oxidation of -Aromatic Hydrazines, Dr. 

 Chattaway, 483 ; Colour Changes which Occur on 

 melting Cholesterol Esters, Dr. Jaeger, 483 ; Apparatus 

 for Studyingf the Inflammability of Mixtures of Coal 

 Dust and .Air, Prof. Phillips Bedson, 483 ; Report on 

 Dynamic Isomerism, Dr. Lowry, 483 ; Transformation 

 of .Aromatic Nitroamines. Dr. Orton, 483 ; the Causes 

 of the Oualitv Strensjth in Wheaten Flour, .A. E. 

 Humphries, 483 ; A. D. Hall, 4S-, ; Prof. T. B. Wood, 

 484; Julian Baker, 484; Dr. E. F. .Armstrong, 484 



Section C (Geology) — Opening .Address by Prof. J. W. 

 Oreerorv, D.Sc. F.R.S., President of the Section, the 

 Geological Society of London, 357 ; Features and 

 Activities of the Desert Regions of Eastern and 

 Western Egypt, H. T. Ferrar, 484; Origin of the 

 Trias about Leicester, T. O. Bosworth. 484 : Relation 

 of the Keuper Marls to the pre-Cambrian Rocks at 

 Bardon Hill, Messrs. Keay and Gimson, 484 ; Minernl- 

 olosrical Constitution of the Keuper Marls in the West 

 of England, Dr. Cullis. 4S4 ; Mr. Lomns. 484: Occur- 

 rence of Boulders of Strontia in the Upper Triassic 

 Marls of .Abbots Leigh, Messrs. Bolton and Water- 



fall, 484; a Mandible of Labyrinlhodon Icplognalhus. 

 Owen, obtained from the Keuper Sandstone of 

 Cubbington Heath, Dr. A. Smith Woodward, 484 ; 

 Impressions in a Large Slab presented to the Liver- 

 pool Universiiy, Mr. Lonias, 4S4 ; Iron-ore Supplies, 

 Bennett Brough, 484; Prof. Sjogren, 484; Prof. Lap- 

 worth, 484 ; G. \V. Lamplugh, 484 ; the Pisolitic iron 

 Ores of .North Wales, W. U. Fearnsidos, 485 ; Distri- 

 bution of Radium in the Rocks of the Simplon Tunnel, 

 Prof. J. Joly, 4S5 ; Remarkable Bed of Peat found in 

 the Union Dock, Liverpool, Mr. Lonias, 4S5 ; Cata- 

 logue of Destructive Earthquakes, Prof. J. Milne, 485 



Section D {Zoology) — Opening Address by William E. 

 Hoylc, M..A., D.Sc, President of the Section, 452 ; 

 Zoology at the British Association, Dr. J. H. Ash- 

 worth, 530; the Physical Basis of Inheritance, Prof. 

 J. S. Hickson, F.R.S., 530; Prof. J. B. Farmer, 

 F.R.S., 531; R. C. Punnett, 531; Prof. V. H. Black- 

 man, 531 ; R. P. Gregory, 531 ; A. D. Darbishire, 531 ; 

 L. Doncaster, 531 ; Prof. M. M. Hartog, 531 ; C. C. 

 Hurst, 531 ; the Experimental Study of Heredity, 

 R. C. Punnett, 531 ; Protozoa, H. B. Fantham and 

 Dr. Ridewood, 531 ; the Movements of Spirochietes, 

 Mr. Fantham, 531 ; Some Points in the Structure of 

 the Larva of Lanicc conchilcga. Rev. G. A. Elrington, 

 532 ; .Arnold T. Watson, S32 ; the Development of 

 Ophiolhrix fragilis, Prof. E. W. MacBride, F.R.S., 

 532 ; Sex in Crustacea and the Nature of Hermaphro- 

 ditism, Geoffrey Smith, 532 ; F. .A. Potts, 532 ; Ex- 

 periments on Seasonally l3iniorphic Forms of .African 

 Lepidoptera, Dr. F. A. Dixey, 532 ; Guy Marshall, 

 532 ; the Function of the Spiracles in Sharks and 

 Rays, A. D. Darbishire, 532 ; the Systematic Position 

 of Polypterus, E. S. Goodrich, 533 ; Colour Variations 

 in the Skin of the Hamster, Prof. Simroth, 533 ; Photo- 

 graphs of a Young Living Okapi, Sir E. Ray 

 Lankester, K.C.B., F.R.S., 533; Plankton Investi- 

 gations off the Isle of Man, Prof. Herdman, 533 ; In- 

 heritance of Eye-colour in Man, C. C. Hurst, 55S 



Section E (Geography) — Opening Address by George C. 

 Chisholni, M.A., B.Sc, President of the Section, Geo- 

 graphy and Commerce, 363 ; Geographical Evolution 

 of Communications, Prof. Vidal de la Blache, 503 ; 

 Recent Developments of Economic Geography, Prof. 

 Max Eckert, 504; J. McFarlane, 504; Kurdish Tribes 

 of .Asiatic Turkey, Mark Sykes, 504 ; Explorers and 

 Colonists, J. D. Rogers, 504; Recession of Niag.ara, 

 J. W. Spencer, 504; the Jamaica Earthquake, Dr. 

 Vau.ghan Cornish, 504 ; British Museum Expedition to 

 Ruwenzori, R. B. Woosnam, 504 ; Characteristics of 

 the District of Jaederen, in Southern Norway, O. J. R. 

 Howarth, 504;- the Land's End Peninsula, .A. W. 

 .Andrews, 504 



Section G (Engineering) — Opening .Address by Silvanus 

 P. Thompson, D.Sc, F.R.S., Past President of the 

 Institution of Electrical Engineers, President of the 

 Section, 391 ; Present Position of Gas and Petrol 

 Engines, Dugald Clerk, 4S5 ; Gases Exhausted from 

 a Petrol Motor, Prof. B. Hopkinson and L. G. E. 

 Morse, 485; Gaseous Explosions, Dugald Clerk. 486; 

 Dr. Boudouard, 486 ; Prof. Haber, 486 ; Prof. Dixon, 

 486 ; on the Pupin Mode of Working Trunk Telephone 

 Lines, Sir William Prcece, 486 ; Oscillographic .Study 

 of Low-frequency Oscillating .Arcs, J. T. Morris, 486; 

 Developments in Electric Incandescent Lamps, Leon 

 Gaster, 486 ; Sir William Preece, 48(1 ; New Engineer- 

 ing Laboratory at the City and Guilds of London 

 Institute, Finsbury, Prof. E. G. Coker. 486; Ferro- 

 concrete, J. S. E. De Vesian, 4S6 ; W. Noble Twelve- 

 trees, 486 ; Origin and Production of Corrugation of 

 Tramway Rails, Worby Beaumont, 486 ; Machine for 

 Weighing the Forces on a Cutting Tool, J. F. Brooks, 

 487; Governing of Hydraulic Turbines, R. S. Ball, 

 487 ; the Ire Problem in Engineering Work in Canada, 

 Prof. H. T. Barnes, 487 



Section H (Anthropology) — Opening .Address by D. G. 

 Hogarth, M..A., President of the Section, Religious 

 Survivals, 397; on the. Beginnings of Iron, Prof. 

 Ridgeway, 462 ; Prof. Edouard Naville, 462 ; Prof. 

 Petrie, 4(12 : Prof. J. L. Myres, 462 ; -Arthur Evans, 

 462 ; Prof. Bosanquet, 462 ; Mr. Crooke, 462 ; on the 



