Nature, ~| 

 June 13, igeij 



Index 



xxvii 



Nineteenth Century, Some Animals Exterminated during the, 



252 ; Dr. Henry de Varigny, 372 

 Nineveh, the Royal Library at, Dr. C. Bezold, 562 

 Nipher (Prof. Francis E. ), Reversed Photographic Picture 

 Obtained with Developing Bath Exposed to Direct Sunlight, 

 209 ; Eclipse Photography, 325 ; Recent Results in Positive 

 Photography, 387 ; Photographic Negatives Printed by 

 Contact by Light of 300-candle Incandescent Lamp, 436 ; 

 Pine Boards Showing Tracks of Ball Lightning Discharges, 

 580 

 Nobel Prizes for Scientific Discovery, the, 40 

 Nodon (A.), Direct Production of X-rays in Air, 556 

 Nomenclature, Some Disputed Points in Zoological, 348 

 North America, the Crocodilians, Lizards and Snakes of, E. D. 



Cope, 415 

 North Atlantic : Weather in Winter of 1898-9, 499 

 Northwich Subsidences, the, T. Ward, 523 

 Nova Aquilae, Visible Spectrum of, Prof. W, W. Campbell, 



260 

 Nova Persei, 420, 477, 482; Sir Norman Lockyer, K.C.B., 

 F.R.S., 441, 467, 540 ; J. Janssen, 483 ; Prof. Edward C. 

 Pickering, 497 ; Prof. H. C. Vogel, 502, 620 ; Prof. Cope- 

 land, 507 ; C. Easton, 540 ; Prof. Hale, 596 ; Mr. Sharp, 

 628 ; Dr. Rambaut, 628 ; Chart for Observations of, 525 ; 

 the Spectrum of, Prof. H. C. Vogel, 575 

 November Meteors, the, 116 

 Numbers of the American Bison, the, 96 

 Nursery, Mother, Baby and, Genevieve Tucker, 418 



Observatories : Astronomical Work at Dunsink Observatory, 

 39 ; Annual Report of the Melbourne Observatory, P. 

 Baracchi, 67 ; the Value of Magnetic Observatories, Captain 

 Ettrick W. Creak, R.N., F.R.S., 127 ; Companion to the 

 Observatory, 1 901, 164; the Royal Observatory, Greenwich, 

 its History and Work, E. W. Maunder, 271 ; United States 

 Naval Observatory, 383 ; Harvard College Observatory, 406 ; 

 Stonyhurst College Observatory, 596 



Octopus Plague on South Coast, W. Garstang, 187 



Occultations, Reduction of, L. Cruls, 212 



Ockerson (J. A.), the Mississippi River, 525 



Ogilvie-Gordon (Dr. Maria M.), Das Geotektonische Problem 

 der Glarner Alpen, 294 ; Geologische Alpenforschungen, 

 A. Rothpletz, 294 



Okell (J.), Action of Nitrous Acid on )3-nitroso-a-naphthyIamine, 

 291 



Old Man's Holidays, an, 106 



Oldham (R. D.), Origin of Dunmail Raise, 411 



OSo (N.), Action of Chemical Solutions on Algae, 66 



Oppel (Dr. Med. Albert), Lehrbuch der vergleichenden Mikro- 

 skopischen Anatomic der Wirbeltiere, 126 



Oppolzer (Dr. E. von), Variability of Eros, 383 



Optics : Experiments Illustrating Phenomena of Vision, Dr. S. 

 Bid well, 23 ; Astigmatic Lenses, R. J. Sowter, 74 ; the 

 Velocity of Light, M. Perrotin, 75 ; the Optics of Acuteness 

 of Sight, Dr. A. S. Percival, 82; F. Twyman, 157 ; Curious 

 Sunset Phenomenon, Prof. Reynolds, 99 ; Quartz-Calcite 

 Symmetrical Doublet, J. W. Gifford, 127; on the Statistical 

 Dynamics of Gas Theory as illustrated by Meteor Swarms and 

 Optical Rays, Dr. J. Larmor, F.R.S., 168; Jena Glass and 

 its Applications to Science and Art, Dr. H. Hovestadt, 173 ; 

 a Treatise on Geometrical Optics, R. A. Herman, 203 ; 

 Brilliant Points and Loci of Brilliant Points, W. H. Roever, 

 220 ; Contributions to Photographic Optics, Dr. Otto 

 Lummer, Prof. Silvanus P. Thompson, F.R.S. , 227 ; Abbe's 

 Optical Theorems, Prof. J. D. Everett, F.R.S. , 276; Curious 

 Illusion, 353 ; Absorption of Light in Coloured Glass, R. 

 Zgismondy, 362 ; Optical Illusion, W. Larden, 372; Photo- 

 graphic Optics, Dr. Otto Lummer, Dr. Rudolf Steinheil, 

 Prof. Silvanus P. Thompson, F.R.S., 395; Interference 

 Bands produced by thin Wedge, H. C. Pocklington, 434 ; 

 Recueil de Donnees Numeriques. Optique, H. Dufet, 

 464 ; Studies in Visual Sensation, Prof. C. Lloyd Morgan, 

 F.R.S., 552; New Method of Distinguishing Colouring 

 Matters by Study of Light-absorption applied to Indophenols, 

 C. Camichel and P. Bayrac, 604 



Orchard (H. L.), Autotomic Curves, 7 



Ore Deposits, the Science of. Dr. R. Beck, Prof. H. Louis, 245, 

 510 



Organic Analysis, Elementary, F. G. Benedict, 514 



Organic Chemistry for Advanced Students, Practical, Dr. Julius 

 B. Cohen, 511 



Organography and Its Relations to Biological Problems, Organ- 

 ographie der Pflanzen, insbesondere der Archegoniaten und 

 Samenpflanzen, Dr. K. Goebel, Prof. J. B. Farmer, 149 



Orientation of Greek Temples, the. Dr. F. C. Penrose, F.R.S., 

 492 



Origin and Progress of Scientific Societies, the, Sir John Evans, 

 K.C.B., F.R.S., 119 



Origin of Terrestrial Magnetism, 286 



Origin of the "Tumbling" of Pigeons, the, Prof. G. B. Howes, 

 F.R.S., 395 



Origin of Worlds, the, Kant's Cosmogony, W. Hastie, 413 



Origins of Art, the, a Psychological and Sociological Inquiry, 

 Yrjo Him, Prof. Alfred C. Haddon, F.R.S., 389 



Ormerod (Eleanor A.), Flies Injurious to Stock, 127 



Ornithology : the Extinction of the Great Purple Coot, R. 

 Henry, 65; British Bird-Names, A. H. Meiklejohn, 113; 

 the Birds of Ireland, R. J. Ussher, R. Warren, loi ; the 

 Story of the Birds, C. Dixon, loi ; Among the Birds, Flor- 

 ence Anna Fulcher, loi ; Curious Flask-shaped Bird's Nest 

 from Trinidad, W. B. Hemsley, F.R.S., 169; Our Bird 

 Friends, R. Kearton, 183 ; the Birds of Africa, G. E. Shelley, 

 393 ; Diastaxy of Birds' Wings, C. Mitchell, 450 ; Bird 

 Destruction in France, L. A. Levat, 500 ; on the Morpho- 

 logy and Phylogeny of the Pal3eognathse(RatitseandCrypturi) 

 and Neognathse (Carinatse), W. P. Pycraft, 536 



Ortona (C), Vitality of Bacteria in Milk, 404 



Osaka (Dr. Y.), Birotation of a^-glucose, 354 



Osborn (Prof. H. F.), the Evidence in the Permian of Common 

 Ancestral Stem of Dinosaurs and Birds, 91 ; Origin of 

 Mammalia, iii., 306 ; National Aspects of Scientific Investiga- 

 tion, 356 ; Phylogeny of European Rhinoceroses, 450 



Oscillographs, 142 



Osmosis of Liquids through Pig's Bladder, G. Flusin, 267 



Ostwald(Prof. W. ), " Grundlinien der Anorganischen Chemie," 



557 



Oswell (William Cotton), Hunter and Explorer, W. E. Oswell, 

 Supp. vi. 



Outline of the Theory of Thermodynamics, an, Edgar Bucking- 

 ham, 269 



Output and Value of British Minerals, Prof. Le Neve Foster, 

 F.R.S., 72 



Ouvrard (L. ), Borates of Magnesium and Alkaline Earth Metals, 



387 

 Owens College, Manchester, the, P. J. Hartog, 374 



Pace (S. ), the Collection of Material for the Study of " Species," 

 490 



Pacher (Dr. G. ), the Velocity of Vortex Rings, 209 



Pacher (Dr. G.), Death of, 256 



Packard (A. S.), New Fossil Crab, 114 



Paget (Mr.), the Application of Physical Instruments to Study 

 of Disease, 474 



Paillot (Rene), Electromotive Force of Magnetisation, 243 



Pakes (W. C. C. ), Gases produced by Bacteria from certain 

 Media, 123 ; Bacterial Decomposition of Formic Acid, 433 



Palseobotany : the Phloem of Lepidophloios and Lepidodendron, 

 Prof. F. E. Weiss, 99 ; Seed-like Fructification in Palaeozoic 

 Lycopods, D. H. Scott, F.R.S., 121 ; Grasswrack from 

 Kwen Lun Mountains, Dr. A. B. Rendle, 219 ; Cast of 

 Fossil Trunk in Basalt, R. H. Walcott, 284 ; Lepidocarpon, 

 D. H. Scott, F.R.S., 506 ; Catalogue of the Mesozoic Plants 

 in the Department of Geology, British Museum (Natural 

 History), the Jurassic Flora, i., the Yorkshire Coast, A. C. 

 Seward, F.R.S., 537 



Palaeognathse (Ratitse and Crypturi), and Neognathse (Carinatse), 

 on the Morphology and Phologeny of the, W. P. Pycraft, 



Palaeontology: Studies in Fossil Botany, D. H. Scott, F.R.S., 

 53; Zeuglodon, F. A. Lucas, 113; New Fossil Crab, A. S. 

 Packard, 114; Wynyardia bassiana. Fossil Marsupial from 

 Tasmania, Prof. B. Spencer, F.R.S., 146; Fossil Remains 

 from Lake Callabonna, E. C. Stirling and A. H. C. Zeitz, 

 181 ; Lower Cretaceous Gryphsea of Texas, T. W. Vaughan 

 and R. T. Hill, 215 ; New Merycochcerus in Montana, Earl 

 Douglass, 266 ; Death and Obituary Notice of James Bennie, 

 352; the Rhsetic Plant Naiadita, I. B. J. Sollas, 411 ; 

 Succession of Fossil Faunas in Kinderhook (Iowa) Beds, 



