Index 



r Nature. 

 L / nic 8, 1905 



A. L. Cortie, 311; Prof. Schuster, 311; the Large Solar 

 Spot of February, 1905, Th. Moureux, 431 ; Nature of 

 Sun-spots, Th. Moreux, 592 ; Relations between Solar 

 and Terrestrial Phenomena, H. I. Jensen, 158 ; the Sun's 

 Rotation, Prof. N. C. Dun^r, 401 ; Solar Radiation and 

 its possible Variability, 494 ; Instructions to Solar Ob- 

 servers, 592 ; Photography of the Solar Corona at the 

 Summit of Mont Blanc, \. Hansky, 527 ; the Orbit of 

 Sirius, Prof. Doberck, 133 ; Variable Radial Velocity of 

 Sirius, Prof. Campbell, 494; Harvard Observations of 

 Variable Stars, Prof. E. C. Pickering, 133 ; Correction 

 of the Longer Term in the Polar Motion, Mr. Kimura, 

 133 ; \xc Spectra of the .Alkali Metals, F. A. Saunders, 

 133; Shower of .Andromedids from Biela's Comet (?), 

 W. F. Denning, 139 ; Characteristics of Nova .^urigae 

 (1892) and Nova Persei (1902), Dr. J. Halm, 142 ; the 

 Eleventh Eros Circular, Prof. H. H. Turner, F.R.S., 

 154; Eclipse Observations, Prof. Kobold, 159; C. W. 

 Wirtz, 159 ; the .Appearance of Spark Lines in Arc 

 Spectra, Dr. Henry Crew, 159 ; the Royal .Astronomical 

 Society of Canada, 159 ; Discovery of a New Comet 

 (1904 d), M. Giacobini, 185 ; Comet 1904 d (Giacobini), 

 233 ; M. Ebell, 256 ; Elements and Ephemeris of, M. 

 Ebell, 211; M. Giacobini, 211: Observations of Comet 

 1904 d. Prof. Hartwig, 281 ; Prof. Nijland, 281 ; Prof. 

 Ambronn, 281 ; M. Borrelly, 281 ; -AL Ebell, 281 ; 

 Ephemeris for, M. Ebell, 353 ; Herr Pechiile, 353 ; 

 Observations of Occultations by Planets, Dr. T. J. J. 

 See, 185 ; Relative Drift of the Hyades Stars, Dr. Down- 

 ing, F.R.S., 185 ; Designations of the A'ariable Stars 

 discovered during 1904, 185 ; the Companion to the 

 Observatory, 186 ; on a very Sensitive Method of 

 determining the Irregularities of a Pivot, Dr. Rambaut, 

 190 ; Dark Nebulosities, \\'. S. Franks, 190 ; Studies in 

 Astronomy, J. Ellard Gore, 199; Radiation Pressure, 

 Prof. J. H. Poynting, F.R.S., 200; Observations of 

 Bright Meteors, Dr. J. Moller, 211 ; Report of the United 

 States Naval Observatory, Rear-.Admiral Chester, 211 ; 

 Another New Comet {1904 e), M. Borrelly, 233 ; Dr. 

 Cohn, 233 ; Elements and Ephemeris for Comet 1904 e. 

 Dr. Elis Stromgren, 25(1 : Observations of. Prof. Hartwig, 

 281 ; Prof. Nijland, 281 ; Prof. .Ambronn, 281 ; M. Bor- 

 relly, 281 ; M. Ebell, 281 ; Observations on the Borrellv 

 Comet (December 28, 1904), G. Rayet, 287 ; Elliptical 

 Character of the New Borrelly Comet (e 1904), G. Fayet, 

 335 ; Ephemeris for Comet 1904 e, M. Ebell, 329 ; Dr. 

 E. Stromgren, 353, 400: Orbit of, M. Fayet, 353; Re- 

 vised Elements for, M. Fayet, 400 : Comet 1904 c (Bor- 

 relly), Dr. E. Stromgren, 518; Light-Curve of 5 Cephei, 

 Dr. B. Meyerman, 234; Structure of the Third Cyanogen 

 Band, Franz Jungbluth, 234 ; New Refraction Tables, Dr. 

 L. de Ball, 234 ; the .Annuaire du Bureau des Longi- 

 tudes, 234; Eclipse Results and Problems, M. le Comte 

 de la Baume Pluvinel, 234 ; Bibliography of Contemporary 

 Astronomical Works, Prof. Ernest Lebon, 234; the 

 Mathematical Theory of Eclipses according to Chau- 

 venet's Transformation of Bessel's Method, Roberdeau 

 Buchanan, 244; Colours of Stars in the Southern Hemi- 

 sphere, Dr. J. Moller, 256; the Heavens at a Glance, 

 256; Astronomical " Annuario " of the Turin Observa- 

 tory, 256 ; Death of Paul Henry, 27S ; Obituary Notice 

 of, 302 ; Variable Stars and Nebulous .Areas in Scorpio, 

 Miss H. S. Leavitt, 282 ; Report of the Natal Observa- 

 tory, E. Nevill, 282 ; the Jesuit Observatory at Belen. 

 Havana, 282 ; the Isochronism of the Pendulum in the 

 Astronomical Clock, Ch. F^ry, 288 ; Fireside .Astronomy, 

 D. VV. Horner, 292 ; Recently Observed Satellites, Sir 

 Oliver Lodge, F.R.S., 295: Prof. AV. H. Pickering, 390; 

 Notes on Stonehenge, Sir Norman Lockyer, K.C.B., 

 F.R.S., 297, 345, 367, 391, 535; Periodical Comets due 

 to Return in 1905, W. T. Lynn, 306 ; Additional Periodical 

 Comets due this Year, Mr. Denning, 374 ; Stars having 

 Peculiar Spectra, Mrs. Fleming, 306 ; Real Paths, 

 Heights, and Velocities of Leonids, Mr. Denning, 306 ; 

 New Method for Measuring Radial-Velocity Spectro- 

 grams, Prof. J. Hartmann, 3of) ; the Eclipse of Aga- 

 thocles in the year —309, Prof. Newcomb, 311 ; Death 

 and Obituary Notice of E. Crossley, 325 ; Solar Eclipse 

 Problems, Prof. Perrine, 329 ; the Conditions in the 

 Solar Atmosphere during 1900-1, N. Donitch, 329; Tri- 

 angulation of the Pleiades Stars, Dr. Elkin, 329 ; a Bright 



Meteor, J. Ryan, 329; Improvements in Equatorial 

 Telescope Mountings, Sir Howard Grubb, F.R.S., 334; 

 Temperature of Certain Stars, W. E. Wilson, 334 ; 

 R(5sultats du \"oyage du S. A". Bclgica en 1897, 1898, ' 

 1899, sous le Commandemant de .A. de Gerlache de 

 Gomery, 337 ; Spectra of 7 Cygni, a Canis Minoris and 

 6 Leonis, E. Haschek and K. Kostersitz, 354 ; Systematic 

 Survey of Double Stars, Prof. R. G. Aitken, 354 ; Report 

 of the Yale Observatory, 1900-4, Dr. Elkin, 354 ; 

 Secondary Shadow on the Rings of Saturn, M. .Amann 

 and Ci. Rozet, 359, 401 ; Observations of Saturn's Satel- 

 ites, Prof. Hussey, 449 ; a Lunar Rainbow, J. McCrae, 

 366; Death of F. J. P. Folie, 371; Ephemeris for 

 Brooks's Comet 1904 I., 374; Observations of Comets, 

 M. Quenisset, 374: Dr. R.G. .Aitken, 449; Mr. Maddrill, 

 449 ; Castor a Quadruple Star, Prof. Campbell, 375 ; the 

 Approaching Total Solar Eclipse of .August 30, Dr. 

 William J. S. Lockyer, 393 ; Observations of the Zodiacal 

 Light, A. Hansky, 401 ; Permanent Numbers for the 

 Minor Planets discovered during 1904, 401 ; .Astronomical 

 Discovery, Herbert Hall Turner, F.R.S., 410: Planetary 

 Tides in the Solar .Atmosphere, Emile .Anceaux, 424 ; the 

 Bruce Photographic Telescope, Prof. Barnard. 424 ; 

 Physical Conditions of the T'lanets, Prof. T. J. J. See, 

 424 ; Discussion of Central European Longitudes, Prof. 

 Th. Albrecht, 424 ; a Popular Guide to the Heavens, Sir 

 Robert S. Ball, F.R.S., 437; the Government Observa- 

 tory at A'ictoria, P. Baracchi, 440 ; Bright Meteors, R. L. 

 Jones, 449 ; .Application of the Iris Diaphragm in Astro- 

 nomy, M. Salet, 455 ; the Iris Diaphragm in .Astronomy, 

 M. Salet, 545; the Planet Fortuna, W. T., 461, sn; 

 W. E. P., 461; Spencer Pickering, F.R.S., 486; 

 Structure of the Corona, Dr. Ch. Nordmann, 469 ; 

 Radiant Point of the Bielid Meteors, K. Bohlin, 469 ; 

 January Fireballs, Mr. Denning, 469 ; Orbits of Minor 

 Planets, Prof. J. Bauschinger, 469 ; Popular Star Maps, 

 Comte de Miremont, 484 ; Galileo's Tower, 492 ; Constant 

 Errors in Meridian Observations, J. G. Porter, 495; 

 Further Researches on the Temperature Classification of 

 Stars, Sir Norman Lockyer, K.C.B., F.R..S., 501 ; the 

 Spectroheliograph of the .Solar Physics Observatory, Dr. 

 W. J. S. Lockyer, 502 ; New Theory to .Account for the 

 Duplication of Lines in the Spectra of A'ariable Stars, 

 Prof. Garbasso, 516; Discovery of a New Comet, 1905 a, 

 M. Giacobini. 51S; Comet 1905 a (Giacobini), Prof. 

 Aitken, 544 ; Dr. Stromgren, 560 r Prof. Hartwig, 569 ; 

 G. Bigourdan, 575 : Elements and Ephemeris for. General 

 Bassot, 617; Dr. Palisa, 618; New A'ariable Stars in the 

 Region about 5 .Aquila?. Prof. Wolf, 519 ; Orbit of the 

 Binary Star Ceti 82, Prof. Aitken, 519 : Radial A'elo- 

 cities of Certain Stars, Prof. Campbell and Dr. H. D. 

 Curtis, 519; Star Places in the A'ulpecula Cluster, Dr. 

 H. Meyer, 519; Death of Prof. Pietro Tacchini, 540; 

 Obituary Notice of, 164; the late Prof. Tacchini, Prof. 

 R. Meldola, F.R.S.,' 583 ; Photography of the Corona 

 without a Total Eclipse, .A. Hansky, 544; Right .As- 

 censions of 2120 Southern Stars, Prof. W. Doberck. 54;; 

 Constancy of Spark Wave-lengths, G. W. Middlekauff, 

 545; the Physical Cause of the Earth's Rigidity. Prof. 

 T. J. J. See', 559: the Lyrid Meteors, John R.' Henry, 

 560 : A'ariability of a Minor Planet, Prof. Wendell, 569 : 

 Real Path of a Bright Meteor, H. Rosenberg, 569 ; a 

 New 24-inch Reflector at Harvard, Prof. E. C. Picker- 

 ing, 569 ; Stars with A'ariable Radial A'elocities, 569 ; 

 Stonyhurst College Observatory, Father Sidgreaves, 592 ; 

 Stanton Drew, A. L. Lewis, 584 ; .Astrophysical Work at 

 the Smithsonian Institution, C. G. .Abbot, 592 : Value of 

 the .Astronomical Refraction Constant, L. Courvoisier, 

 592 ; a Little Know'n Property of the Gyroscope, Prof. 

 William H. Pickering, 608; Protographv of Planetary 

 Nebul.-B, W. S. Franks. 618; Radial' Velocities of 

 "Standard-Velocity Stars," Prof. Belopolsky, 618; Mag- 

 nitude Equation in the Right .Ascensions of the Eros 

 Stars, Prof. R. H. Tucker, 618 

 .Astruc (.A.), the Glycerophosphates of Piperazine, 504 

 .Atlas of Microscopical Petrography, Twentieth Century, 341 

 .Atmosphere, the .Absorption of Light by the. Dr. A. 



Bemporod, 402 

 .Atmosphere, the Circulation of the, James Thomson, 365 

 .Atmosphere, the Conditions in the Solar, during 1900-1, 

 N. Donitch, 329 



