Index 



r Natu> e, 

 {^October 7, 1920 



April Meteor Shower, The, 276 



Aquarium Cultures for Biological Teaching, Dr. Monica 

 Taylor, 232 



Arawaks, The Central, W. C. Farabee, 159 



Arcachon, Ville de Sant6 ; Monographic Scientifique et 

 M^dicale, Dr. F. Lalesque, 322 



Archaeocyathinae from the Weddell Sea, Dr. W. T. Gordon, 

 528 



Archaeological Research, 'Ihe Prospects of, Sir C. H. 

 Read, 497 



Arc Spectra in vacuo and Spark Spectra in Helium of 

 Various Elements, Prof. J. C. McLennan, J. F. T. 

 Young, and H. J. C. Ireton, 632 



Arcs of Primary Triangulation along the Ninety-eighth 

 Meridian in the U.S. and in Mexico, and on Triangula- 

 tion in Southern Texas, Connection of the, W. Bowie, 

 141 



Arctic : Expedition, Capt. Roald Amundsen's, 240, 273 ; 

 Prairies, The, E. Thompson Seton, 426 



t] ArgQs, Spectrum of, Dr. J. Lunt, 149 



Aristotelian Society, Dean Inge elected President of the, 

 622 



Arithmetic : for Preparatory Schools, An, with Answers, 

 T. Dennis. Second edition, 67 ; Revision, Logarithms, 

 Slide Rule, Mensuration, Specific Gravity, and Density, 

 T. Thomas. Second edition, 229 



Armstrong College, Dr. W. N. Haworth appointed Pro- 

 fessor of Organic Chemistry at, 537 



Army : Hygiene and its Lessons, Lt.-Gen. Sir Thomas 

 Goodwin, 532 : Prior to the Recent War, Gen. Sir 

 John Goodwin, 52 ; The New, Science and, 61 ; Col. 

 E. H. Hills, 103 ; Prof. L. N. G. Filon ; Prof. R. 

 Whiddington, 133 ; Lt.-Col. E. Gold, ; Dr. C. S. Myers, 

 135 ; Prof. A. R. Richardson, 170 ; Col. K. E. Edge- 

 worth, 233-; C. S. Wright, 391 ; The Scheme for the 

 Education of the Rank and File of the, 121; The 

 Universities and the, 157; F. J. M. Stratton, 234 



-Arsenic and Antimony Ores, H. Dewey, 338 



-Arsenious Acid, The "Reversible Oxidation of, C. Matignon 

 and J. A. Lecanu, 347 



Art, The Teaching of, in Local Museums, M. J. Rendall, 

 627 



Artillery Science, Sir George Greenhill, 268 



Asbestos and the Asbestos Industry : The World's Most 

 Wonderful Mineral and other Fireproof Materials, 

 A. L. Summers, 193 



Asia, A Geography of, J. Martin, 35 



Asiatic Origin of Man, The. W. B. Wright, 728 



Aspherical Nucleus Theory Applied to the Balmer Series 

 of Hydrogen, The, Dr. L. Silberstein, 441 



Asphodelus, A New Race of. Obtained by the Action of 

 a Marine Climate, L. Daniel, 506 



Association : of Technical Institutions, Forthcoming Sum- 

 mer Meeting of the, 631 ; of University Teachers, Prof. 

 J. Strong elected President of the, 537 



Asteroxylon Mackiei from the Rhynie Chert-Bed of 

 Aberdeenshire, Dr. Kidston and Prof. Lang, 527 



Astrographic Catalogue. The, 403 



Astrolabe: Diagram. Dr. J. Ball, 329; A Handbook of the 

 Prismatic, Dr. J. Ball and H. K. Shaw, 329 



Astronomical Announcements by Wireless Telegraphy, 

 Prof. Kobold, 403 



ASTRONOMICAL NOTES. 



Comets : 



Return of Tempel's Comet, 436; Photographs of the 

 Brorsen-Metcalf Comet, Prof. Barnard, 467 ; The 

 Planetary Families of Comets, Prof. H. N. Russell, 

 467 ; Tempel's Second Periodic Comet, 560 ; Denning's 

 Comet of i88i and a Meteoric Shower, Rev. M. 

 Davidson, 560 ; A New Comet, M. Schaumasse, 658 ; 

 Tempel's Comet, M. Fayet, 789 



Instruments : 

 A New Spectropyrheliometer and Solar Measurements 

 made with it, W. W. Coblentz and H. Kahler, 625 



Meteors : 



Bright Meteors, 54 ; April Meteors, 149 ; The April Meteor 

 Shower, 276 ; A Bright Fireball, 370 ; Commencement 



of the Great Perseid Shower of Meteors, 595 ; An 

 Interesting Meteorite, G. P. Merrill, 759 



Observatories : 

 The Madrid Observatory, 213 ; Memoirs of the Kodai- 

 kanal Observatory, vol. i., part ii., 340; Parallax 

 Work at the Sproul Observatory, Dr. Miller, 500 ; 

 Publications of the Dominion Astrophysical Observa- 

 tory, Victoria, B.C., vol. i.. No. i, 658; Annual 

 Report for 1920 of the Hill Observatory, Sidmouth, 

 726 ; New Solar Radiation Station in Arizona, 726 ; 

 The Union Observatory, Johannesburg, 759 ; Stony- 

 hurst Observations in 1919, Rev. A. L. Cortie, 789; 

 Publications of the Astronomical Laboratory at Gro- 

 ningen. No. 29, Prof. J. C. Kapteyn, 838 



Planets : 



Cape Observations of the Sun, Mercury, and Venus, 183 ; 

 Conjunction of Jupiter and Neptune, 213; Occultation 

 of a Star by Saturn, Prof. Plassmann and others, 

 244 ; Eclipse of the Moon, 276 ; Mars and Wireless 

 Signals, 276 ; The Lunar Eclipse, 307 ; Conjunction 

 of Mars with Spica, 340 ; Conjunction of Mercury with 

 e Geminorum, A. Burnet, 370; The Planet Jupiter, 

 Rev. T. E. R. Phillips, 500 ; Mercury an Evening Star, 

 529 ; The Lunar Parallax and Related Constants, Prof. 

 W. de Sitter, 529 ; The New Minor Planet GM, 595 



Stars : 



Occultation of a Star by Saturn, L. J. Comrie, 22 ; 

 Total Light of the Stars, P. J. Van Rhijn, 54; Star 

 Clusters, Dr. H. Shapley, 54 ; The Binary Star 

 p Eridani, B. H. Dawson, 84 ; Faint Nebulae, E. P. 

 Hubble, 84; Spectrum of jj Argus, Dr. J. Lunt, 149; 

 Infra-red Spectra of Nebulae, Dr. K. Burns and W. H. 

 Wright, 149 ; Capella, Prof. F. Schlesinger and Z. 

 Daniel, 183 ; A Nova in a Spiral Nebula, Prof. Wolf, 

 213 ; Stellar Spectroscopy at the Detroit Observatory, 

 P. W. Merrill, L. Hadley, 244 ; The Wasting 

 of Stellar Substance, Prof. F. W. Very, 276 ; 

 The Binary Krueger 60, S. A. Mitchell and C. P. 

 Olivier, 307 ; The Duplicity of v Geminorum, Dr. 

 Bernewitz, 340 ; Conjunction of Mercury with € Gemi- 

 norum, A. Burnet, 370; Double Stars, J. Jackson, 436; 

 Diffraction Image of a Disc, Dr. H. Nagaoka, 436 ; 

 The Masses of the Stars, Prof. H. N. Russell, 500; 

 Capture Orbits, Prof. L. Becker, 560 ; The Expanding 

 Disc of Nova Aquilae, Dr. J. Lunt, 595 ; Galactic Con- 

 densation, R. T. A. Innes, 759 ; Discovery of a Nova 

 in Cvgnus, W. F. Denning, 838 ; Parallax of the B- 

 type Star Boss 1517, J. Voute and others, 838 



Sun : 



The Total Solar Eclipse of September 20, 1922, A. R. 

 Hinks, 84 ; The Total Solar Eclipse of 1918, June 8, 

 117; Cape Observations of the Sun, Mercury, and 

 Venus, 183 ; Kodaikanal Observations of Prominences, 

 J. and Mrs. Evershed, 340 



Miscellaneous : 



The Nautical Almanac for 1922, 22 ; Calendar Reform, 

 A. Philip, M. Flammarion, 22 ; A Noon Reflector, Prof. 

 C. V. Boys, 117; The Einstein Displacement of Spectral 

 Lines, J. Evershed, C. E. St. John, 244; The Nature 

 of Photographic Images, Dr. Kenneth Mees, 307 ; 

 Longitude by Wireless Telegraphy, Prof. Sampson, 

 370 ; Astronomical Announcements by Wireless Tele- 

 graphy, Prof. Kobbold ; The Astrographic Catalogue, 

 Tidal Friction and the Lunar and Solar Accelerations, 

 Dr. H. Jeffreys, 403 ; The Zeeman Effect in Furnace 

 Spectra, A. S. King, 529 ; Am Easy Method of Finding 

 Latitude, N. Liapin, 62.1^ ; Increasing the Photographic 

 Power of Telescopes, Dr. Shapley, 625 ; The Date of 

 Easter, 691 ; Astronomy in Town Planning, H. L. 

 Seymour, 691 ; The Infra-red Arc Spectra of Seven 

 Elements, C. C. Kiess and W. F. Meggers, 726; The 

 Structure of the Universe, Prof. W. D. MacMillan, 789 



.-Xstronomy : At Oxford during the War, Prof. H. H. 

 Turner, and others, 407 ; Central Wireless Station for. 

 Major W. J. S. Lockyer, 454; Descriptive, the 



