Nature, ~\ 

 December lo, 1903J 



Index 



Vll 



A-.hby (T., jun.), Excavations at Caer\vent, in Monmouth- 

 shire (1899-IQ03), 637 

 Aston (Mr.), Rimu Resin, 238 ; the Karaka Fruit, 238 

 Astronomy : the Solar and Meteorological Cycle of Thirty- 

 tive Years, Dr. William J. S. Lockyer, 8; Donohoe 

 Comet-medals of the Astronomical Society of the Pacific 

 Awarded to Michel Giacobini, 12 ; Proposed Reconstruc- 

 tion of the Coelostat Reflecting Telescope of the Verkes 

 Observatory as a Memorial to Prof. Snow, 13 ; Our 

 Astronomical Column, 16, 42, 68, 89, m, 138, 162, 183, 

 ^07. 233, 255, 279, 305, 330, 353, 376, 397, 424, 461, 491, 

 519. 531. S54i 580, 60b, 030; Evidence for Life on Mars, 

 A. R. Hinks, 16; a Reported Projection on Mars, m ; 

 Projection on Mars, Messrs. Lowell and Slipher, 353 ; 

 the South Polar Cap of Mars, Prof. Barnard, 138 ; the 

 " Canals " on Mars, E. W. Maunder and J. E. Evans, 

 190; E. M. .Antoniadi, 461; Observations of Mars, MM. 

 Flammarion and Benoit, 606 ; a New Comet, Mr. Grigg, 

 lO ; Nova Geminorum, Prof. E. C. Pickering, 16 ; Prof. 

 Hale, 68; Prof. Frost, 68; Variability of, Prof. E. C. 

 Pickering, 89 ; Observations of, Prof. Barnard, 207 ; 

 Spectroscopic Observations of. Prof. Perrine, 279 ; the 

 Spectrum of Nova Geminorum, Dr. H. D. Curtis, 425 ; 

 the Eclipse of the Moon, .April 11-12, 16, 306 ; M. Montan- 

 gerand, 16 ; A. Kannapell, 23 ; P. Puiseux, 23 ; at Mar- 

 seilles, M. Stephan, 23 ; at Bordeaux, G. Rayet, 23 ; 

 Cause of Moon's Obscurity on April 11, Rev. S. J. John- 

 son, 46 ; Visibility of the Eclipsed Lunar Disc during the 

 Second Half of the Eclipse of April 11-12, M. Amann, 

 96; the Occurrence of Spark Lines in .Arc Spectra, J. 

 Hartmann and G. Eberhard, 17 ; Four Stars with 

 Variable Radial \'elocities, H. M. Reese, 17 ; Newly 

 Determined Stellar Radial \'elocities, Prof. \'ogel, 519 ; 

 the Harvard Meridian Photometer Observations, Prof. 

 E. C. Pickering, 17 ; Rumford Medal .Awarded to Prof. 

 George E. Hale, 39 ; Comet 1903 h, M. Ebell and H. 

 Kreutz, 42 ; a Remarkable Algol Variable, Prof. E. C. 

 Pickering, 42 ; New Value for the Solar Parallax, B. Wein- 

 berg, 42 ; Instructions to Observers of the Sun, 43 , 

 Stonyhurst College Observatory Report for 1902, 43 ; 

 Royal .Astronomical Society, 46, 190 ; Methods of De- 

 veloping Photographs of Nebulze, Mr. Ritchey, 46 ; Period 

 of the Sunspots and the Mean .Annual Temperature 

 Variations of the Earth, Charles Nordmann, 47 ; Connec- 

 tion between Sun-spots and Atmospheric Temperature, 

 Charles Nordmann, 162 ; on the Simultaneous A'ariation 

 of Solar Spots and Terrestrial Temperatures, -Alfred 

 .Angot, 119; Sun-spots and Terrestrial Temperatures, C. 

 .Nordmann, 184 ; Sun-spots and Phenology, .Alex. B. 

 MacDowall, 389 ; Cooperation in .Astronomy, Prof. 

 Edward C. Pickering, 61 ; Parallax of the Binary System 

 5 Equulei, W. J. Hussey, 69; Prof. .A. .A. Rambaut, 69; 

 Recent Observations made at Greenwich and Paris for 

 the Determination of the Difference of Longitude, 85 ; 

 -Astronomical Occurrences in June, 89 ; in July, 183 ; 

 in August, 305; in September, 397; in October, 531; ir 

 November, 630 ; Origin of the H and K Lines of the 

 Solar SpectruTi, Prof. J. Trowbridge, 89; the Leeds 

 Astronomical Society, 89 ; the Stellar Heavens, 

 Ellard Gore, loi ; Death of Dr. .A. .A. Common, 

 F.R.S., 108; Obituary Notice of, Dr. William J. S. 

 Lockyer, 132 ; Death of Prof. Deichmiiller, 135 ; Report 

 of the Oxford University Observatory, Prof. H. H. 

 Turner, iii ; Periodicities of the Tidal Forces and Earth- 

 quakes, R. D. Oldham, iii ; Harvard Photographs of the 

 Entire Sky, Prof. E. C. Pickering, 138 ; the Royal Observ- 

 atory, Greenwich, 138 ; the Question of Prominence, 

 1-^acula and Spot Circulation, Prof. Bigelow, 139 ; Sonnen- 

 tlecken. Prof. K. Kassner, 140 ; the Crossley Reflector of 

 the Lick Observatory, 162 ; the Mirror of the Crossley 

 Reflector, D. G. Johnstone Stoney. 183 ; the Relationships 

 between Arc and Spark Spectra, Prof. J. Hartmann, 163 ; 

 Photographic Observations of Comet 1902 ni., Prof. 

 Sykora, 183 ; Radiant Points of July and August Meteors, 

 Mr. Denning, 184; the Satellites of Saturn, W. J. 

 Hussey, 184 ; Reported Change on Saturn, Prof. 

 Barnard, 207 ; White Spot on, W. F. Denning, 

 229 ; another White Spot on, W. F. Denning, 247 ; the 

 White Spots on Saturn, J. Comas Sold, 425 ; Bright Spots 

 on Saturn, W. F. Denning, 279 ; the Spots on, W. F. 

 Denning, 390 ; the Rotation Period of Saturn, W. F. 



Denning, ^ig ; Leo Brenner, 554; Search-Ephemeris for 

 Faye's Comet, Prof. E. Stromgren, 207, 461 ; the Red 

 Spot on Jupiter, Stanley J. Williams, 208 ; Retarded 

 Motion of the Great Red Spot on, W. F. Denning, 390 ; 

 Occultation of a Star by, T. Banachiewlcz, 631 ; Herr 

 Kostinsky, 631 ; Mr. Denning, 631 ; the Study of Very 

 Faint Spectra, Harold K. Palmer, 208 ; Structure and 

 History of the Lunar Crust, MM. Lcewy, and P. Puiseux, 

 215; Radium and Solar Energy, Dr. W. E. Wilson, 

 F.R.S., 222 ; Comet 1903 c, G. Fayet, 233 ; M. Ebell, 255 ; 

 Dr. Meyermann, 255 ; Prof. Ambron, 255 ; Prof. Hartwig, 

 255; Prof. Millosevich, 255; Dr. Aitken, 353 ; Comet 

 1903 c Discovered by .M. Borrelly on June 21, E. Stephan, 

 239 ; Elements of the Borrelly Comet, G. Fayet, 239 ; 

 Photograph of Borrelly 's Comet 1903 c, .M. Qudnisset, 

 336 ; the Spectrum of. Dr. Curtis, 376 ; Prof. Perrine, 

 376 ; M. Deslandres, 424 ; Spectroscopic Observations of, 

 H. Deslandres, 408 ; Ephemeris for, M. Knapp and W. 

 Dziewulski, 398; Penetrative Solar Radiations, R. 

 Blondlot, 233 ; the Spectra of Metals and Gases at High 

 Temperatures, Prof. J. Trowbridge, 234; Zenith-telescope 

 Results, C. L. Doolittle, 234 ; Comets and their Tails, 

 and the Gegenschein Light, Frederick G. Shaw, 245 ; 

 Search-ephemeris for Comet 1896 V. (Giacobini), M. 

 Ebell, 256, 491, 606; the Limits of Unaided Vision, 

 Heber D. Curtis, 256; on a Probable Relationship be- 

 tween the Solar Prominences and Corona, Dr. William 

 J. S. Lockyer, at Royal Astronomical Society, 257; the 

 Lyrids, 1903, Alphonso King, 270; John R. Henry, 526; 

 the Tenth "Eros" Circular, Prof. H. H. turner, 

 F.R.S., 276; the Opposition of Eros in 1905, Prof! 

 Pickering, 580 ; Measurement of the Intensitv of Feeble 

 Illuminations, M. Touchet, 279 ; the German Royal 

 Naval Observatory, 280 ; the Spectroscope in .Astronomy, 

 Agnes M. Gierke, Prof. R. A. Gregory, 338; Photo- 

 graphs of Comet 1902 h, Prof. R. H. Curtiss, 305 ; the 

 new Observatory for Buluwayo, 305 ; the System of 

 € Hydrae, Prof. Aitken, 305 ; Wave-lengths of Silicon 

 Lines, Pr^f. Hartmann, 306; Death and Obituary Notice 

 of Prosper Henry, 326; the Spectrum of o Ceti, Joel 

 Stebbins, 330; Photographic Efficiencv of a Short Focus 

 Reflector. Prof. Schaeberle, 330 ; the Godlee Observatory 

 330 ; the Satellite of Neptune, Prof. Perrine, 353 ; 

 Diameter of, C. W. Wirtz, 580 ; the Estimation of Stellar 

 Temperatures, Prof. Kayser, 353; Observations of the 

 Mmima of Mira, Prof. A. A. Niiland, 354; the Size of 

 Stellar Systems, 354 ; Recently Determined Stellar Paral- 

 laxes, Prof. A. Donner, 354; Prof. J. C. Kaptevn and 

 Dr. \\. de Sitter, 354; the Spectroscopic Binary )3 

 Scorpii, V. .M. Slipher, 376 ; Effects of Absorption on the 

 Resolvmg Power of Spectroscopes, Prof. Wadsworth, 376 ; 

 a New Circumzenithal .Apparatus, Fr. Nusl and M. J. J. 

 Fric, 376 ; the Secchi Commemoration, 376 ; New Table 

 for ex-Meridian Observations of Altitude, H. B. Good- 

 win, 397; Return of Brooks's Comet, Prof. .Aitken, 398; 

 a Corona; a Spectroscopic Binary, Prof. Hartmann, 398 , 

 the Allegheny Observatory, Prof. F. L. O. Wadsworth, 

 398 ; United States Naval Observatory, 425 ; Radiation 

 in the Solar System, its Effect on Temperature and its 

 Pressure on Small Bodies, J. H. Poynting, F.R.S., 430; 

 Radiation Pressure and Cometary Theory, E. F. Nicholls 

 and G. F. Hull, 461 ; a Catalogue of 1520 Bright Stars, 

 462 ; Intensity of Spectral Lines, Prof. Pickering, 491 ; a 

 Provisional Catalogue of Variable Stars, Prof. W^ M. 

 Reed and Miss A. J. Cannon, 491 ; Mass of Mercury, 

 Prof. T. J. J. See, 491 ; Corrections to Existing Star Cata- 

 logues, G. Boccardi, 491 ; Radio-activity and the Age of 

 the Sun, Prof. G. H. Darwin, F.R.S', 496; Death of 

 Washington Teasdale, 516; Report of the Cape Observ- 

 atory, Sir David Gill, 519; Liverpool .Astronomical 

 Society, 519; Recent Papers on Meteorites, 532; Report 

 of the Paris Observatory for 1902, M. Lcewy, 532 ; the 

 Rigidity of Piers for Meridian Circles, Prof. G. W. 

 Hough, 532 ; the Broadening of Spectral Lines, G. W. 

 Walker, 554; the Spectrum of Hydrogen. Louis .A. Par- 

 sons, 554 ; the Orbit of { Bootis, Prof. W'. Doberck, 555 ; 

 Errata in Various Star Catalogues, G. Boccardi, 555 ; 

 Reported Discovery of a Nova, Prof. Wolf, 580 ; Prof. 

 Pickering, 580 ; Prof. Hale, 580 ; Prof. Barnard, 580 ; 

 Dr. Parkhurst, 580; 1903-4 Ephemeris for Winnecke's 



