Nature, 

 Ninicntber 25, 



Index 



vn 



Asteroidea, an Account of the Deep-sea, Collected by the 

 R.I.M.S.S. Investigator, Prof. Ren6 Koehler, 67 



Astronomy; Our Astronomical Column, 19, 46, 82, no, 

 138, 170, 199, 229, 2b7, 298, 314, 355, 37b, 404, 436, 

 465, 498, 52S ; the Iransvaal Observatory, Johannesburg, 

 20 ; the Transvaal Observatory, 356 ; the Comets of 1907 

 and igo8, Prof. Kobold, 20 ; Astronomical Occur- 

 rences in July, 19; in August, 138; in September, 298; 

 in October, 404 ; Comet 19090 (Borrelly-Daniel), 20 ; the 

 New Daniel Comet, M. Javelle, 29 ; Observations at the 

 Observatory of Marseilles of the Comet 1909a (Borrelly), 

 Henry Bourget, 29 ; Observations of the Comet 1909a 

 (Borrelly-Daniel) made at the Observatory of Besani;on, 

 P. Chofardet, 29 ; Comet 1909a (Borrelly-Daniel), M. 

 Chofardet, 46; Comet 19090^ 83; Ephemeris for. Dr. M. 

 Ebell, 267 ; the Shape of the Planet Mercury, R. Jonck- 

 heere, 20 ; Observations of Sun-spots, 190S, E. Guerricri, 

 20 ; Radial Motion in Sun-spot Vapours, .Mr. Evershed, 

 82 ; Changes of Form in Sun-spots, A. .Amaftounsky, no ; 

 a Large Group of Sun-spots, 138 ; Magnetic Fields of 

 Sun-spots, Dr. Hale, 137 ; Water Vapour in Sun-spots, 

 W. M. Mitchell, 229; a Large Group of Sun-spots, 356; 

 ."Another Large Sun-spot, 405 ; Observations of Saturn and 

 its Rings, M. Schaer, 20; Observations of Saturn's 

 Rings, Prof. Barnard, 199 ; Observations of Saturn, Prof. 

 Lowell, 405 ; Mr. Slipher, 405 ; Tables for the Reduc- 

 tion of " Standard Coordinates " to Right Ascension and 

 Declination, A. Hnatek, 20 ; Nature of the Hydrogen 

 Flocculi on the Sun, Prof. G. E. Hale, 26 ; Origin of 

 Certain Lines in the .Spectrum of e Orionis, Sir Norman 

 Lockyer, K.C.B., F.R.S., F. E. Baxandall and C. P. 

 Butler, 26 ; la Plan^te Mars et ses Conditions 

 d'Habitabilit^, Camille Flammarion, Dr. William J. S. 

 Lockyer, 33 ; Observations of Mars, R. Jonckheere, 229, 

 376; M. Jarry-Desloges, 229, 355, 376, 436; M. 

 -■^ntoniadi, 355, 436 ; M. Qu^nisset, 355 ; Prof. Lowell, 

 405 ; J. H. Elgie, 405 ; the South Polar Spot on Mars, 

 Dr. Lohse, 298 ; Changes on Mars, M. Jarry-Desloges, 

 314; R. Jonckheere, 465; M. Antoniadi, 465; the 

 .■\pproaching Opposition of Mars, William E. Rolston, 

 336 ; Presence of Free O.xygen in the Atmosphere of 

 Mars, P. Lowell, 390 ; Water Vapour in the Martian 

 .'Ktmosphere, Prof. Campbell, 376 ; Mars, M. Jarry- 

 Desloges, 498 ; M. Jonckheere, 498 ; MM. Qu(;nisset and 

 .'\ntoniadi, 498 ; Observations on the Surface of the 

 Planet Mars from June 4 to October, 1909, R. Jarry- 

 Desloges, 510; Quantitative Measures of the Oxygen 

 Bands in the Spectrum of Mars, Prof. V'ery, 529 ; der 

 Bau des Weltalls, Prof. Dr. J. Scheiner, 36; die 

 Planeten, Dr. Bruno Peter, 36; Possibility of an Extra- 

 Neptunian Planet, 41 ; the Assumed Planet, O, beyond 

 Neptune, Prof. W. H. Pickering, 268; a New Form of 

 Comparison Prism, Prof. Louis ISell, 46; Halley's Comet, 

 Dr. Holetschek, 46; L. Matkiewitsch, 46; Halley's 

 Comet Rediscovered, Prof. Max Wolf, 355 ; Messrs. 

 Cowell and Crommelin, 355 ; Halley's Comet, Prof. 

 Burnham, 376 ; Prof. Millosevich, 528 ; Father Searle, 

 528; Prof. Newall, 529; Visibility of Halley's Comet, 

 W. F. Denning, 395 ; Observations of Halley's Comet, 

 i9ogc. Prof. Wolf, 404 ; Elements and Ephemeris for 

 Halley's Comet (igogc), 436; Ephemeris for Halley's 

 Comet, igogc, Mr. Crommelin, 465 ; the Polarisation of 

 the Solar Corona, M. Salet, 46 ; the Solar Constant and 

 the .Apparent Temperature of the Sun, Dr. F^ry, 47; 

 Variations of Brightness of Encke's Comet and the Sun- 

 spot Period, J. Bosler, ";g ; the Identity of Comets 1908a 

 and igo86 (Encke), Dr. Ebell, 83 ;' Death of Prof. 

 Simon Newcomb, 78 ; Obituary Notice of. Sir Robert 

 S. Ball, F.R.S., 103; Binary Star Orbits. Father 

 Stein, 83 ; R. H. Baker, 83 ; Micrometric Measures 

 of Double Stars, Phillip Fox, 83 ; Double-star 

 Measures, Prof. R. G. Aitken, 138; Parallax of the 

 Double Star 2 2398, Dr. Karl Bohlin, 356 ; Double-star 

 Measures, Prof. Burnham, 376; Double-star Observa- 

 tions, Prof. Doberck, 436 ; Stationary Meteor Radiants, 

 Prof. W. H. Pickering, no; Comparison of the Spectra 

 of the Centre and Edge of the Sun's Disc, MM. Buisson 

 and Fabry, no; Mutual Occultation of Jupiter's Second 

 and Fourth Satellites, M. Pidoux, no; Observations of 

 Jupiter's Fifth Satellite, Prof. Barnard, 138 ; Observations 

 of Jupiter, Prof. Barnard, 170; Jupiter's South Tropical 



Dark Area, Scriven Bolton, 487; Zenographical Frag- 

 ments, ii., the Motions and Changes of the Markings on 

 Jupiter in 18S8, A. Stanley Williams, 125; the Yerkes 

 Observatory, Prof. E. B. Frost, in; Prominence 

 Observations, Prof. Ricco, in; Azimuth, G. L. Hosmer, 

 126 ; Sun and Star Observations at the Stone Circles of 

 Keswick and Long Meg, Dr. John Morrow, 128 ; on 

 the Cause of the Remarkable Circularity of the Orbits 

 of the Planets and Satellites and on the Origin of the 

 Planetary System, T. J. J. See, 132 ; Physical Interpreta- 

 tion of Lunar Features, M. Puiseux, 138 ; Origin of the 

 Contrasts of Colour in the Moon, P. Puiseux, 150 ; 

 Why has the Moon no Atmosphere? Prof. .Alexander 

 Johnson, 486; Probable Influence of the Motion of the 

 Moon on Atmospheric Radio-activity, some Meteor- 

 ological Consequences, Paul Besson, 510; Artificial Imita- 

 tion of Lunar Landscape, Paul Fuchs, 356 ; Motion of 

 Neptune's Satellite, David Gibb, 149; Maximum of Mira 

 in 1908, M. Luizet, 13S ; Naozo Ichinohe, 267 ; tlie 

 Maximum of Mira in October, 1908, Dr. Nijland, 376 ; 

 the Orbit of ^ Sagittarii, a Cepheid Variable, J. H. 

 Moore, 170; the Leeds Astronomical Society, 170; the 

 Solar Eclipse of June 17, 1909, Father Rigge, 171 ; 

 Movements in the Sun's Upper Atmosphere, ,M. 

 Deslandres, 170; Search-ephemcrides for Comet 1896 VII. 

 (Perrine), F. W. Ristenpart, 170; R. Castro and A. 

 Repenning, 170; Re-discovery of Perrine's Comet, Herr 

 Kopff, 229;. Herr Ristenpart, 229; Comet 19096 (Perrine's 

 i8g6 VII.),' Herr Ristenpart, 267; Prof. Kobold, 267; 

 Comet igogb (Perrine, 1896 VII.), 298; Observations of 

 Perrine's Comet, 315 ; Dr. Max Wolf, 376 ; Dr. Ebell, 370 ; 

 the Perseids of 1909, W. F. Denning, 189 ; the Recent 

 Perseid Shower, J. H. Elgie, 267; J. C. Jefferson, 267; 



E. Hawks, 267 ; a Brilliant Meteor, M. Borrelly, 200 ; 

 August Meteoric Shower, W. F. Denning, 224, 246; 

 Meteor Observations, 315; Remarkable Meteors, 465; 

 the Meteor in Sunshine, October 6, W. F. Denning, 

 487 ; September Meteors, Torvald Kohl, 498 ; the Relative 

 Atmospheric Efficiency of Telescopes, R. T. A. Innes, 

 igg ; the Motion of the Pole, H. Kimura, igg ; Reports 

 of Observatories, Mr. Hough, 200; M. Baillaud, 200; 

 Solar Research, A. A. Buss, 200 ; the Figure and Mass 

 of the Planet Uranus deduced from the Motions of the 

 Two Interior Satellites, Qisten Bergstrand, 210; 

 .Annuaire astronomique de I'Observatoire royal de 

 Belgique, igog, 2ig; Death and Obituary Notice of 

 William F. Stanley, 225 ; the Number of the Stars. 

 Gavin Burns, 229 ; the Faint Companions of Procyon 

 and Sirius, Prof. Barnard, 229; Prof. Lowell's New 

 40-inch Reflector, 229 ; the Palisa and Wolf Celestial 

 Charts, Dr. Palisa, 230 ; the Spectroscopic Binary 

 j3 Orionis, J. Plaskett, 267 ; the Planar .Arrangement of 

 the Planetary System, Dr. T. J. J. See, 275: the Orbits 

 of Certain Spectroscopic Binaries, R. H. Baker, 298; 



F. C. Jordan, 298; New Spectroscopic Binaries. 313; 

 the Bolide of .April 20, as Observed in France, M. 

 Qu^nisset, 298 ; les Observations m^ridiennes, Theorie et 

 Pratique, F. Boquet, 301 ; the Absorption of Light in 

 Space, J. A. Parkhurst, 314; Planets and their Satel- 

 lites, Prof. Lowell, 315; Temperature and Pressure Con- 

 ditions in the Solar Atmosphere, Mr. Buss, 356 ; Mr. 

 Evershed, 356 ; Movements of the Upper Solar .Atmo- 

 sphere above and round the Faculae, H. Deslandres, 

 390 ; the Nature of Solar Facul;^, M. Deslandres, 465 ; 

 Entwickelung und Untergang des Kopernikanischen 

 Weltsystemsbei den .Alten, O. T. Schulz, 365: Death 

 and Obituary Notice of Bryan Cookson, 372 ; the Spectro- 

 heliograph of the Catania Observatory, Prof. Ricc6, 

 376 ; Ha Images on Spectroheliograms, M. Deslandres. 

 376 ; Mr. Buss, 376 ; the Future of Astronomy, Pro'. 

 E. C. Pickering, 405 ; Multiple Monochromatic Images 

 of the Sun given by the Large Lines of the Spectrum, 

 H. Deslandres and L. d'Azambuja, 420; the Recent 

 Magnetic Storm and Aurora, Basil T. Rowswell, 436; 

 the Aurora of September 25, Torvald Kohl, 498 ; a Newly 

 Discovered Nebula Cluster in Cetus, Prof. Wolf, 436 ; 

 Observations of Variable Stars, W. Miinch, 436 ; Terres- 

 trial Refraction in Egypt, Mr. Xydis, 436 ; Messrs. Craig 

 and Keeling, 436 ; Magnetic Storms and Solar Eruptions, 

 Sir Oliver Lodge, F.R.S., 425, 456; Dr. C. Chree, 

 F.R.S., 456; Death of J. A. Fraissinet, 432; Fireball in 



