Nature. "J 

 June iS, 1903J 



I nd ex 



XXXV 



Parker (Mr.), Connection between Amounts of Oxygen and 

 Carbonic Acid Dissolved in Natural Waters and the 

 Occurrence in these of Microscopic Organisms, 16 



Parkinson (John), Geology of the Tintagel and Davidstow 

 District, 575 



Parks (Dr. G. J.), Thickness of Liquid Film found by 

 Condensation at Surface of a Solid, 430 



Patagonia, through the Heart of, H. Hesketh Prichard, 

 Colonel G. E. Church, 321 



Pathology : Measurement of Electric Resistance as Analysis 

 for Fermentations and in Pathological Cases, M. Lesage, 

 350; the Heart of Tuberculous Subjects, MM. Ch. 

 Bouchard and Balthazard, 359 ; Abandonment of the 

 School of Medical Research at Netley, 490 ; the Heart in 

 a Pathological State, MM. Ch. Bouchard and Balthazard, 



5°3 

 Patterson (J.), Spontaneous Ionisation in Air, 215 

 Paton (Dr. D. Noel), the Methods of Investigating the 



North Sea Fisheries, 174 

 Pavements, a Treatise on Roads and, Ira Osborn Baker, 



557 



Pearl Fisheries of Ceylon, the, Prof. W. A. Herdman, 

 F.R.S., at the Royal Institution, 620 



Pearls, the Origin of, Dr. H. Lyster Jameson, 280 



Pearson (Karl, F.R.S.), Correlation of the Mental and 

 Physical Characters in Man, 261 



Peaty Water, Lead in, Dr. Houston, 498 



Pechard (E.), Products of Reduction of Copper Salts by 

 Hydroxylamine, 431 



Pechule (C. F.), Comet 1902 h Giacobini, 158 



Pedigrees, Francis Galton, F.R.S., 586 



Peirce (B. O.), Temperature Coefficients of Magnets of 

 Chilled Cast Iron, 494 



Pelabon (H.), Action of Hydrogen on the Sulphides of 

 Antimony in the Presence of Arsenic, 552 



Pelet (L.), the Limits of Combustibility of Different Flames, 

 470 



Pellat (H.), Magnetofriction of the Anode Bundle, 239 



Pembrey (M. S.), Practical Physiology, 388 



Penard (Dr. Eugene), Faune Rhizopodique du Bassin du 

 Lehman, Supp. February 5, vi 



Pender (H.), New Magnetic Systems for the Study of 

 Feeble Fields, 480 ; Electric Convection, 624 



Penfield (S. L.), Solution of Problems in Crystallography 

 by Trigonometry, 45 



Penmanship, System of Upright, J. Jackson's, 445 



Penrose (F. C.', F.R.S.), Death of, 372 



Penrose's Pictorial Annual, 1902-3, 270 



Perdoni (Torquato), Le Forze Idrauliche, 413 



Perforated Antlers, Carved and, Prof. T. Rupert Jones, 

 F.R.S., 174 



Perkin (A. G.), a Reaction of Phenolic Colouring Matters, 

 117; Purpurogallin, 23S ; the Destructive Distillation of 

 Ethyl Gallate, 238 



Perkin (Dr. F. Mollwo), Education in Germany and Eng- 

 land, 226 ; the Chemistry of the Terpenes, F. Heusler, 

 267 ; the Aftermath of the Paris Exhibition, 465 



Perman (Dr. E. P.), the Evaporation of Water in a Current 

 of Air, 477 



Perrier (E.), La Vie des Animaux, 342 



Perrine (Prof. C. D.), the Nebula Around Nova Persei, 16 ; 

 Spectrum of the Nebulosity Surrounding Nova Persei, 

 593 ; Coronal Disturbance and Sunspots, 16 



Perrine's Comet, 1S96 vii, Return of, Herr Ristenpart, 329 ; 

 Perrine. Comet 1902 b, Herr Ebell, 424 



Perrotin (M.), Recent Sunsets, 46; Velocity of Light and 

 the Solar Parallax, 119; Redetermination of the Velocity 

 of Light and the Solar Parallax, 137 



Perry (Prof. John, F.R.S.), Mathematics in the Cambridge 

 Locals, 81 ; Slide-rule for Powers of Numbers, 141 ; 

 Hohere Analysis fiir Ingenieure, 338; Cambridge Mathe- 

 matics, 390 ; the Thermodynamics of Heat Engines, 

 Sidney A. Reeve, 602 

 ( Perry-Coste (F. H.), the Mismanagement of London Uni- 

 versity, 271 



Persei, Nova, the Nebula around, Prof. C. D. Perrine, 16; 

 Spectrum of the Nebulosity Surrounding, Prof. Perrine, 

 593 ; Change of Focus in the Light from, Prof. E. E. 

 Barnard, 66 ; Early Observations of, Prof. Pickering, 

 90; Proper Motion and Parallax of Nova Persei, Asten 

 Bergstrand, 183 ; Observations of the Light of Nova 



Persei, 496 ; Pulkova Observations of. Dr. William J. S. 

 Lockyer, 515; Density and Change of Volume of, C. E. 

 Stromeyer, 612 



Perseid Shower, Observations of the, Herr Koss, 114 



Perseids, Observations of the, August 10 and 11, 1902, 

 Charles P. Olivier, 211 



Persia, Through, and Baluchistan, A. H. Savage Landor 

 489 



Personal, Sir Oliver Lodge, F.R.S., 81 



Petal-less Flowers, Insects and, Prof. Plateau, G. W. 

 Bulman, 319; E. Ernest Lowe, 368 



Petch (T.), Plane Geometry, Adapted to Heuristic Methods 

 of Teaching, 577 



Petrography : Quantitative Classification of Igneous Rocks 

 Based on Chemical and Mineral Characters, with a 

 Systematic Nomenclature, Whitman Cross, Joseph P. 

 Iddings, Louis V. Pirsson, and Henry S. Washington, 

 Prof. Grenville A. J. Cole, 578 



Philip (A.), Electro-plating and Electro-refining, 295 



Philippines, Disease Resembling " Farcy " in the, 209 



Philology : Death of Gaston Paris, 442 



Philosopher, a Biological, Hans Driesch, Prof. J. Arthur 

 Thomson, 50 



Philosophy : the Royal Philosophical Society of Glasgow, 

 70; the World and the Individual, First Series: the'Four 

 Historical Conceptions of Being, Josiah Royce, A. E. 

 Taylor, 99 ; the World and the Individual, Second Series : 

 Nature, Man, and the Moral Order, Josiah Royce, A. E. 

 Taylor, 99; Cambridge Philosophical Society, 119, 502; 

 Die Grundsatze und das Wesen des Unendlichen in der 

 Mathematik und Philosophie, Dr. Phil. Kurt Geissler, 

 387; Studies in the Cartesian Philosophy, Norman Smith. 

 389; Chemical Philosophy: Le Mixte et la Combinaison 

 Chimique : Essai sur 1'EvoIution d'une Idee, E. Duhem, 

 29 



Phonetics, the Elements of Experimental, Edward Wheeler 

 Scripture, Prof. John G. McKendrick, F.R.S., 268 



Phonographic Records, the Archives of, 301 



Photography : Curvature of Wheel Spokes in Photographs, 

 R. M. Milne, 8 ; Photographs of Halos and Parhelia, 

 Dr. A. Sprung, 13 ; Photograph of Carboniferous Lime- 

 stone by Prof. S. H. Reynolds and Godfrey Binglev, 

 John E. Marr, A. S. Reid, 32 ; British Association 

 Geological Photographs, 32 ; Photographs of Cross-sec- 

 tions of Hollow Pencils Formed by Oblique Transmission 

 through an Annulus of a Lens, Miss A. Everett, 46 ; How 

 to Buy a Camera, H. C. Shelley, 102 ; the Reproduction 

 of Colours by Photography, H. E. Dresser and Sir H. 

 Trueman Wood, 127; Aspects of Photographic Develop- 

 ment, Alfred Watkins, 157; on a Dark Chamber for 

 Three-colour Photography, M. Prieur, 168 ; Traits ency- 

 clopedique de Photographie, Charles Fabre, 201 ; Photo- 

 graphy of Stellar Regions, Egon von Oppolzer, 280 ; 

 Counting the Red Corpuscles of the Blood by Photo- 

 graphy, Dr. C. A. MacMunn, 327; Photographs of the 

 North Polar Region, M. Flammarion, 400 ; Parallax 

 Determinations by Photography, C. E. Stromeyer, 431 ; 

 Photographs of Volcanic Phenomena, Tempest Anderson, 

 464 ; the Prevention of Dew Deposits on Lantern Slides. 

 Prof. Arthur Schuster, F.R.S., at the British Association 

 at Belfast, 476 ; the Figures, Facts, and Formula? of 

 Photography, 484 ; Das Objectiv im Dienste der Photo- 

 graphie, Dr. E. Holm, 486 ; " The Amateur Photo- 

 grapher " Library, (25) Enlargements : their Production 

 and Finish, G. Rodwell Smith, (26) Bromide Printing, 

 Rev. F. C. Lambert, 510; Telephoto Lens Adaptable to 

 Objective of Camera, 520 ; Nature and the Camera, A. 

 Radclyffe Dugmore, 534 ; First Steps in Photo-Micro- 

 graphy, F. Martin Duncan, 609 ; Method of Studying the 

 Action of Insects' Wings by Instantaneous Photography, 

 Robert von Lendenfeld, 617; Nova Geminorum before its 

 Discovery, Prof. Pickering, 618 



Photometer, a Daylight, Albert Campbell, 332 



Physical Geography : Coral Reefs of Pemba Island and 

 British East Africa, C. Crossland, 119; an Introduction 

 to, Grove Karl Gilbert and Albert Perry Brigham, Prof. 

 Grenville A. J. Cole, 147 



Physics : Refractivities of the Elements, Clive Cuthbertson, 

 32 ; the Waste of Energy from a Moving Electron, Oliver 

 Heaviside, F.R.S., 6, 32 ; Methods for Verifying whether 

 a Ruler or Sliding Bar is Rectilinear and for Fixing a 



