Nature, 

 March 24, 1 



Judex 



Aston (W". G.), Origin of Sexual Antipathy among Near 

 Relations, ib3 



Astronomy : the Systematic Motions of the Stars, Prof. 

 F. W". Dyson, F.R.S., 11; Changes on Mars, M. Jarry- 

 Desloges, 19 ; Dimensions and Function of the Martian 

 Canals, Dr. H. C. Pocklington, 58 ; the Functions of the 

 Martian Canals, H. F. Hunt, bq ; Recent Observations 

 of Mars, M. Jonckheere, 77; Si. Jarry-Desloges, 77; 

 .Seasonal Change on Mars, Prof. Lowell, 107 ; M. 

 .Antoniadi, 107; M. Ou^nisset, 107; J. Comas Sola, 

 107 ; Ocular and Photographic Observations of the Planet 

 Mars, M. Idrac, iig; Observations of the Planet Mars 

 made at the Observatory, Meudon, E. M. Antoniadi, 119; 

 Photography of the Planet Mars, A. de la Baume Pluvinel 

 and F. Ba'.det, 119; Observations of Mars, -M. Jonck- 

 heere, 140; .\I. Antoniadi, 140; M. Idrac, 140; MM. de la 

 Baume Pluvinel and F. Baldet, 140 ; M. Kostinsky, 140 ; 

 the New Canals of Mars, Prof. Percival Lowell, 189 ; 

 Mars, Rev. T. E. R. Phillips, 202; Prof. Lowell, 408; 

 R^sum^ of Observations of Mars made at the Fabra 

 Observatory, Barcelona, during the Opposition of 1909, 

 J. Comas Sola, 209; Subjective Phenomena on Mars, M. 

 .\ntoniadi, 227; M. Jonckheere, 227; Oppositions of Mars, 

 Enzo Mora, 320 ; Markings on Mars as seen with Small 

 and Large Telescopes, Dr. Percival Lowell, 397 ; Gradual 

 Retreat of the Southern Polar Cap of Mars, R. Jarry- 

 Desloges, 299 ; Markings on Mars, Prof. Lowell, 440 ; 

 Halley's Comet, 1909c ig, 165, 201 ; Prof. \Volf, 19; Knox 

 Shaw, 19, 319 ; M. Javelle, 29 ; Prof. Barnard, 46, 319 ; Mr. 

 Cowell, 47 : Sir. Crommelin, 47, 140, 292, 320, 378, 499 ; Mr. 

 Mollis, 140; Rev. T. E. R. Phillips, 140, 348; Dr! Graff, 

 202 ; H. Thiele, 202 ; Prof. Nijland, 227; Herr v. Buttlar, 

 227 ; MM. Deslandres and Bernard, 259 ; Prof. A. A. 

 Iwanow, 259; Drs. Nijland and J. v. d. Bilt, 292; Mr. 

 Keeling, 319; Pio Emanuclli, 319; Messrs. F'rost and 

 Parkhurst, 348 ; Earl of Crawford, 349 ; Prof. Searle, 

 378; Herr Archenhold, 378; Observations of Halley's 

 Comet, M. Giacobini, 89 ; P. M. Ryves, 429 ; Suggested 

 Observations of Hallev's Comet, 260; Elements of 

 Halley's Comet, P. H.' Cowell, F.R.S., and A. C. D. 

 Crommelin, 77; New Elements for Halley's Comet, C. J. 

 Merfield, 440; the Spectrum of Halley's Comet, W. H. 

 Wright, 107; H. Deslandres and .\. Bernard, 2-in.: On 

 Halley's Comet as seen from the Earth, P. H. Cowell, 

 F.R.S., 400; Transit of Halley's Comet, Rev. C. S. 

 Taylor, 458 ; Sun-spot Spectra, Prof. Adams, 19 ; an In- 

 teresting Sun-spot, M. .Amaftounsky, 259 ; Radial .Move- 

 ments in Sun-spots, J. Evershed, 358 ; the Epoch of the 

 Last Sun-spot .Maximum, Dr. Wolfer, 378 ; Designations 



• of Newly Discovered \"ariable Stars, 19 ; the Motions 

 of Some Stars in Messier 92 (Hercules), Prof Barnard, 

 19 ; Our Astronomical Column, 19, 46, 77, 107, 140, 165, 

 201, 227, 259, 292, 319, 348, 378, 408, 440, 468, 4Q0, 

 .Solar Vortices and Magnetic Fields, Prof. George E. 

 Hale, For.Mem.R.S., at Royal Institution, 20, 50; 

 Observations of the Sun at the Observatory of Lyons, 

 J. GuiUaume, 29; the Temperature of /3 Perseus (.AJgol), 

 Charles Nordmann, 29 ; November Meteors, John R. 

 Henry, 38 ; New -Astronomical Observatory and Meteor- 

 ological Station on Hampstead Heath, 42 ; Astronomical 

 Occurrences in November, 46 ; in December, 140 ; in 

 January, 292 ; in February, 40S ; Re-discovery of Win- 

 necke's Comet (igogd). Prof. Hillebrand, 46; Winnecke's 

 Comet, Dr. Perrine, 378; Ephemerides for 'Winnecke's 

 Comet, igogci. Prof. Hillebrand, 202 ; Saturn, 47 ; Mercury, 

 M. Jarry-Desloges, 47 ; Period of Rotation of, M. Jarry- 

 Desloges, 178; the" Flash " Spectrum without an Eclipse, 

 Messrs. Hale and .\dams, 47 ; Search-ephemeris for Giaco- 

 bini'sComet, 1896 V, 47; a Brilliant Meteor, 77 ; Perrine 's 

 Comet, 19096, Dr. Kobold, 78 ; Prof. W'olf, 140; Ephemer- 

 ides for. Dr. Ebell, 202 ; the Liverpool Astronomicrd 

 Society, 78 ; the Parallax of the Double Star 2 2398, Dr. 

 Bohlin, 78 ; Prof. Schlesinger, 78 ; Means of Removing 

 Astronomical Clocks from the Influence of the A^ariations 

 of .Atmospheric Pressure, G. Bigourdan, 89 ; Atmospheric 



^ Refraction, Rev. W. Hall, 107 ; the Perseid Meteors in 

 1909, Mr. Oliver. 107 ; a Daylight Meteor, Dr. Palisa, 

 107 : Spectroscopic Binaries, Dr. S. A. Mitchell, 107 : the 

 " Annuaire " of the Bureau des Longitudes, 107 ; Rela- 

 tive Periods of Revolution of Planets and Satellites, C. E. 

 Stromeyer, iig; Movements of the Red Spot Hollow on 



Jupiter, Scriven Bolton, 12S ; Observations of Jupiter, 

 H. E. Lau and C. Luplau-Jannsen, 202 ; Dr. H. H. 

 Kritzinger, 202 ; Simultaneous Disappearances of Jupiter's 

 Satellites 1800-1999, Enzo .Mora, 320 ; the Design of 

 Spectrographs, J. Plaskett, 140; the Astronomical Society 

 of Wales, 140; British Astronomical Association, 140; 

 " The Danger of the Comet," E. C. Andrews, Prof. C. A. 

 Young, ib2 ; Discovery of a New Comet igoge. Prof. 

 Daniel. 165 ; Daniel's Comet, igoge. Prof. Daniel, 201 ; 

 Dr. Ebell, 201, 227; Elements and Ephemeris for 

 Daniel's Comet, igoge. Dr. Ebell, 2g2 ; Observations 

 of, M. Borrelly, 2gg ; P. Chofardet, 299 ; a Possible 

 Identification of Comet igoge, P. H. Cowell, F.R.S., 

 427; Elliptic Elements and an Ephemeris for Daniel's 

 Comet, igoge. Dr. Ebell, 468; Ephemeris for Daniel's 

 Comet, igoge, 500 ; Absorption of Light in Space, Prof. 

 Kapteyn, 166; Copernicus Anticipated, Pierre Duhem, 

 166; Star Almanac and Calendar for igio, 166; How to 

 Study the Stars, L. Rudaux, 187 ; How to Identify the 

 Stars, Dr. Willis I. Milham, 187 ; Collected Works 6f Sir 

 William Herschel, Dr. T. J. J. See, iSg ; a Solar Physics 

 Observatory for .Australia, 202 ; the Hamburg Observ- 

 atory, 202 ; Temperature Classification of Stars, Drs. 

 Wilsing and Scheiner, 228 ; Dr. Nordmann, 228 ; a New 

 Variable Star, or a Nova, Mme. Ceraski, 228 ; the "Com- 

 panion to the Observatory," 228; Observations of Comets 

 made at the Marseilles Observatory, M. Coggia, 23g ; 

 History of .Astronomy, Prof. G. Forbes, F.R.S., 24^; 

 Death of .M. Bouquet de la Grye, 256 ; Obituary Notice of, 

 286 ; Periods in the Variation of Latitude, Jan Krassow- 

 ski, 25g ; the Planet Venus, Prof. Lowell, 260 ; Sextant 

 Errors, Thos. V. Baker, 276 ; Solar Activity and Mag- 

 netic Storms, Dr. W. J. S. Lockyer, 293 ; Father Cortie, 

 293 ; Michie Smith, 293 ; Star Swarms, Prof. Turner, 

 293 ; Herr Kostinsky, 293 : a Large Nebula in Cetus, 

 Prof. Wolf, 293 ; Annuaire Astronomique et M^tSor- 

 ologique, 1910, 293 ; the Tercentenary of the Telescope, 

 Dr. J. L. E. Dreyer, 190; J. A. Hardcastle, 308; a Bril- 

 liant Fireball, Mr. Denning, 320 ; Ancient Ideas of the 

 Physical World, Leon Jaloustre, 320; Minor Planets, Dr. 

 Neugebauer, 320 ; the Total Solar Eclipse of May 8, 320; 

 Comets due to Return this Year, Mr. Lynn, 320 ; Other 

 Periodic Comets due to Return this Year, Dr. Hopfer, 

 378; Lcs Progr^s r^cents de I'.Astronomie (1908), Prof. 

 Paul Stroobant, 33b; Royal .Astronomical Society's Gold 

 Medal -Awarded, 343 ; Discovery of a New Comet, 348 ; 

 the New Comet (igioa), 372, 409; W. E. Rolston, 372; 

 Father Cortie, 440 ; William McKcon, 440 ; Father .Sid- 

 greaves, 44I ; Rev. J. Rowland, 441 ; Theodore Kensing- 

 ton, 441 : Eleonora -Armitage, 441 ; Dr. F. J. -Allen, 441 ; 

 Prof. R. -A. Gregory, 441 ; M. Giacobini, 441 ; M. 

 Chofardet, 441 ; Mdlle. de Robeck, 441 ; Mr. Keeling, 441 ; 

 Dr. -Albrecht, 441 ; MM. Deslandres. Bernard, and 

 d'.Azanibuja, 442; Dr. Schiller, 442; Gustave Gillman, 

 468; Lucien Rudaux, 468; Mr. Hinks, 468; MM. 

 Luizet and Guillaume, 468; M. Borrelly, 468; MM. 

 Javelle, Charlois, and Schauniasse, 468, 479 ; Mr. 

 Innes, 490 ; Dr. Kobold, 4Q9 ; E. Esclangon, 499 ; M. 

 Borrelly, 499; the Johannesburg Comet, Ch. Andr^, 448; 

 Observations of Comet 19 too at the Observatory of 

 Meudon, H. Deslandres, A. Bernard, and L. d'-Azambuja, 

 449; Transformations of the Innes Comet (igioa), Ernest 

 Esclangon, 509 ; Intermittent Glow of the Tail of the 

 New Comet, J. H. Elgie, 399 ; the Spectra of Comets* 

 Tails, Prof. .A. Fowler, 349 ; Two Curiously Similar 

 Spectroscopic Binaries, 349 ; the " -Annuaire astronomique," 

 Belgium, 349 ; Royal -Astronomical Society, 358 ; 

 -Astronomische .Abhandlungen der Hamburg Sternwarte 

 in Bergedorf, 365 ; .Annuaire for igio of the Madrid Ob- 

 servatory, 378 ; Death and Obituary Notice of Sir Charles 

 Todd, k.C.M.G., F.R.S., 403; Caroline Herschel and 

 her Comet Seeker, 40S ; Studies of Solar and Stellar 

 Spectra, Count -A. de Gramont, 440 ; Elements and 

 Ephemeris for Tempel's Comet (1873 II.), M. Maubant, 

 440 ; -Aspects of -Astronomy, Sir David Gill at Royal 

 -Astronomical Society. 46^ : the Magnetic Storm of Sep- 

 tember, igog, and Solar Phenomena, M. Deslandres, 468 ; 

 the Intrinsic Light of the Sky, Ch. Fabry, 468 ; Publica- 

 tions of the Lund Observatory, Sweden, 468 ; the 

 Spectrum of the Zodiacal Light, W. E. Rolston, 470 ; 

 Discovery of a New Comet, igiod, M. Pidoux, 499: the 



