%uPplcineHt to Nature,~\ 

 Slovtmber 26, 1891 J 



Index 



Vll 



its to Western University of Pennsylvania and Allegheny 

 servatory, 323 ; Prize offered by Fiirstlich Jablonowsky 

 esellschaft, 325 ; Researches on the Mean Density of the 

 th, Prof. A. Cornu, 327 ; Parallax of P Ursse Majori^, 

 17 ; Lessons in Astronomy, C. A. Young, 342 ; a Mag- 

 Ificent Meteor, Donald Cameron, 343 ; the Spectrum of 3 

 ;, Prof. E. C. Pickering, 355 ; the Polarization Theory 

 Tthe Solar Corona, Prof. Prank H. Bigelow, 355 ; Observa- 

 jns of the Motion of Sirius, Prof. Vogel, 355 ; Return of 

 Encke's Comet, 355; Periodic Variations of Latitudes of Solar 

 Prominences, A. Ricco, 360 ; Bright Streaks on the Moon, 

 the Astronomer- Royal for Scotland, 360; Pogson's Observa- 

 tions at the Madras Observatory, 388 ; Prof. Lodge's Pioneers 

 of Science, 415 ; the Proposed Observatory on Mont Blanc, 

 416; Stars having Peculiar Spectra, Prof. E. C. Pickering, 

 438 ; Photography of Solar Prominences, M. Deslandres, 

 1 ;8 ; Encke's Comet {c 1891), Dr. Backlund, 438 ; a New Aste- 

 id, 438 ; Jupiter and his Markings, W. F. Denning, 439 ; 

 liar Observations, Prof. Tacchini, 453 ; Connection between 

 . crrestrial Magnetism and Radiant Sunlight, Prof. Frank H. 

 iiigelow, 453 ; Two New Asteroids, 453 ; Prof. Newton on the 

 Action of Jupiter on Comets, 453 ; Solar Observations, Prof, 

 "icchini, 453 ; W. E. Wilson on the Absorption of Heat in 

 Solar Atmosphere, 453 ; Dr. Copeland on Bright Streaks 

 the Moon, 454 ; Telescopic Work for Starlight Evenings, 

 I, F. Denning, 467 ; the Linear Arrangement of Stars, 478 ; 

 luence that Aberration of Light may exercise on Spectro- 

 >ic Observations of Solar Prominences, M. Fizeau, 488 ; 

 iribuiion of Solar Phenomena during first half of 1891, 

 , Tacchini, 488 ; Messrs. Philip and Son's New Orrery, 501 ; 

 jhtning Spectra, W. E. Wood, 504 ; Photographic Magni- 

 es of Stars, Dr. Scheiner, 526 ; Influence of Aberration 

 jn Ob-ervations of Solar Prominences, M. Fizeau, 530 ; 

 sical Appearance of Periodic Comets, E. E. Barnard, 

 ; Discovery of Tern pel- Swift's Comet, 551 ; the Sun's 

 )tion in Space, A. M. Gierke, 572 ; Measurements of Lunar 

 Hant Heat, 577 ; Two New Variable Stars, Rev. T. E, 

 in, 578 ; a New Comet, 578 ; the Story of the Heavens, 

 Robert Stawell Ball, F.R.S., 589 ; Distribution of Lunar 

 It, Frank H. Very's, 601 ; an Astronomer's Work in a 

 lern Ob-ervatory, Dr. David Gill, F.R.S., 603 ; Tempel- 

 rift's Periodic Comet, G. Bigourdan, 608 ; Personal Equa- 

 in Transit Observations, P. Stroovant, 608 ; the Zodiacal 

 jht and Aurorse, M. A. Veeder, 631 ; Comet e 1891, 631 ; 

 able Stars, 631 ; Jupiter's First Satellite, 631 

 ftens. Earthquake at, 40 

 Atkins (Tommy, Sen.), W = M^, 493 



Atkinson (Rev. J. C), Forty Year> in a Moorland Parish, 122 

 Atkinson (R. W.), Meeting of the British Association at Cardiff, 



204 

 Atlantic, Pilot Chart of North, for July, 281 ; for September 



1891, 501 

 Atoniic Weight Determination, Stas's Work in, 134 

 Attaches, Engineer, to Austrian Embassies, proposed, 57$ 

 Auerbach (Prof.), the Measurement of Hardness in Transparent 



Bodies, 282 

 Aurora seen at Ambleside, Mr. Tuckwell, 475 

 Aurora Borealis, a Rare Phenomenon, 494, 519, 541 ; W. 



Duppa-Crotch, 614; Prof. W. N. Hartley, F.R.S., 614 

 Aurora, Zodiacal Light as related to, O. T. Sherman, 310 

 AurorjE, the Heights of, T. W. Backhouse, 54 [ 

 Aurorae, Zodiacal Light and, M. A. Veeder, 631 

 Ausdehnungslehre, Quaternions and the, Prof. J. Willard 



Gibbs, 79 ; Prof, P. G. Tait, 105 

 Australia: Australasian Association for the Advancement of 

 Science, 40, 450, 574; Exploration of Central Australia, 

 Alexander McPhee, 67 ; Meteorological Service of Australasia, 

 88 ; Nest and Eggs of the Catbird, A. J. North, 207; Luminous 

 In>ects in the Australian Bush, Henry Deane, 233; Earth- 

 quake Shocks in Italy and Australia, R. L. J. Ellery, F.R.S., 

 272 ; the Australian Marsupial Mi)le, Notoryctes typhlops, 

 Dr. P. L. Sclater, F. R.S., 449; Extraordinary Rainfall 

 (1^) in, Charles Todd, 501 ; Olive Growing in, Principal 

 Thomson, 501 

 Ayrlon (Prof. W. E., F.R.S.) : Quadrant Electrometers, 166 : 

 Alternate Current and Potential Difference Analogies in 

 Methods of Measuring Power, 237 ; Construction of Non- 

 inductive Resistances, 261 

 Azoimide, New Method of Preparing, Drs. Noelling and 



Grandmougin, 600 

 Azores, Earthquake in the, 475 



B.Sc. Exam., Lond, Univ. 1892, Edward J. Burrell, 565 



Backhouse (T. W.), the Heights of Auroras, 541 



Backlund (Dr.). Encke's Comet, 6- 1891, 438 



Bacteriology : Les Virus, par Dr. S. Arloing, 27 ; Bacterio< 



logical and Chemical Examination of Potable Waters, A. 



Fl S. C. Newman, 74 ; the British Institute of Preventive 



Medicine, 86 ; Leprosy Bacillus cultivated in Serum, by Drs. 



Rake and Buckmaster and Surgeon-Major Thomson, 161 ; 



Bacteria and their Products, Sims Woodhead, M.D.,246; 



Congress of Hygiene on Bacteriology, 419 ; Manuel Pratique 



d'Analyse Bacteriologique des Eaux, Dr. Miquel, Prof. 



Percy F. Frankland, F.R.S., 513 

 Bailey (G. H.), University of London, 105 

 Baines (A. C), Soaring of Birds, 520 

 Baker (J. G., F.R.S.) : Hand-book of the Ferns of Kaffraria, T. 



R. Sim, 75; European Botany, Vol. I., K. Richter, 100 

 Bakhuyzen (Prof. Van de Sande), on Variations in Latitude, 69 

 Ball (Sir R. Stawell, F.R.S.) : on the Cause of an Ice Age, 



480 ; the Story of the Heavens, 589 

 Ball (V., F.R.S.): Cetaceans in African Lakes, 198; the 



Koh-i-Nur, a Reply, 592 

 Balloons, the Aspiration Psychrometer and its Use in Balloons, 



Dr. R. Assmann, 512 

 Baltimore Fishing School, the, 549 

 Bang (Dr.), Tuberculosis, 395 



Bangor University College, Electricity in the Physical Depart- 

 ment, 18 

 Barber (Mr. C. A ), appointed Superintendent of Agricultural 



Dep.irtment of the Leeward Islands, 257 

 Barclay (Dr.), Death of, 435 

 Barlow (Dr.), Tuberculosis in Children, 397 

 Barnard (E. E.) : Observations of the Zoliacal Counter Glow, 



283 ; Physical Appearance of Periodic Comets, 551 

 Barnes (Lieutenant H. E ), Birds Nesting in Western India, 42 

 Barometer, the Aneroid, and Leibnitz, 40 

 Barometer at Ben Nevis Observatory in Relation to Wind, Dr, 



Buchan, 167 

 Barometric Depression, Erratic Track of a. Rev. W. Clement 



Ley, 150 

 Barometric Observations, Prof. Hellmann on, 66 

 Barrington (.Sir Vincent) and Surgeon-General Bostock, the 



Hospital and Ambulance Organization of the Metropolitan 



Asylums Board for the Removal and Isolation of Infectious 



Diseases, 486 

 Basalt, the Specific Heat of, 456 

 Batelli's (Signer) Exp-rimenis on Water-evaporation in Sun 



and in Shade, 136 

 Bateman (Dr.), elected Associate of Paris Academy of Medicine, 



351 

 Bateson (W,), Supernumerary Legs and Antennas in Beetles, 



188 

 Beam (William) and Dr. Henry Leffmann, Examination of 



Witter for Sanitary and Technical Purposes, 102 

 Beare (Prof. Thomas Hudson), Translation of Luigi Cremona's 



Graphical Statics, 221 

 Beaumont on Screw Propellers, 510 

 Becquerel (Edmond), Death of, 39 

 Becquerel (Henri) on Underground Temperatures, 632 

 Bees and Honey-dew, F. M. Burton, 343 

 Bees in New Zealand, G. M. Thomson on, 19 

 Bees, Remarkable Instance of Frugality in, W. H. Harris, 550 

 Beetle, fam. Curculionidae, as an Example of Protective Colora- 

 tion, a New South Wales, Mr. Froggatt, 576 

 Beetles, Supernumerary Legs and Antennne in, W. Bateson, 



188 

 Belgian Academy of Sciences, Subjects for Prize Competition 



Proposed by, 136 

 Bell (Alfred), Post-Tertiary Marine Deposits on South Coast of 



England, 191 

 Bell (John), a Dog Story, 521 

 Ben Nevis Observatory in Relation to Wind, Barometer at, 



Dr. Buchan, 167 

 Ben Nevis, the Winds of, R. T. Omond, A. Rankin, 191 

 Bendire (C), on the Collection, &c, of Birds' Egjs and Nests, 



502 

 Bengal, Earthquakes in, 185 



Bennett (A. R.), on Underground Parcels Delivery, 510 

 Bennett (Alfred W.), Aerial Roots of the Mangrove, 370 

 Bent's (Theodore) Investigation of Zimbabye Ruins, 451 

 Benue and the Kibbe, Major Claude M. Macdonald, 46 

 Berg (Herr), Snow-observation in Russia, 113 



