Supplement lo Nature,~\ 

 December Z, 1898 J 



Index 



XXIX 



Pearson (Prof. Karl, F.R.S.). the Distribution of Prepotency, 



292 ; Chance or Vitalism, 495 ; Reconstruction of Stature of 



Prehistoric Races, 286 

 Pearson (Marchant), Notes on Volumetric Analysis, 269 

 Peary (Robert E.), Northward over the "Great Ice," Dr. Hugh 



Robert Mill, 589 

 Peat-Fibre Yarn, 178 



Pechuele (Herr), Comet Tempel 1866? 490 

 Peddie (Dr. W. ), Torsional Oscillations of Wires, 239 

 Peek (Sir Cuthbert), Meteorological Observations at Rousden 



Observatory, 514 

 Peirce (B. O.), Properties of Seasoned Magnets of Self-hardening 



Steel, 117 

 Pekelharing(Prof.), Food-reception by Sponges, 47 

 Pelabon (H.), Action of Hydrogen on Silver Sulphide and vice 



versd, 240 

 Pell (A), Focal Surfaces of Congruences of Tangents to given 



Surface, 22 

 Pellat (H.), on Evaporation of Iron at Ordinary Temperature, 



71 ; the Energy of a Magnetic Field, 612 ; Variation of 



Dielectric Constants with Temperature, 635 

 Pendulum without Disturbance, Maintenance of Motion of, G. 



Lippmann, 264 

 Pendulum, Mode of supporting Motion of, A. Guillet, 287 

 Pendulum Oscillations in same Straight Line, Apparatus for 



representing Resultant of Two, Prof A. Righi, 488 

 Pentane Lamp, lo-candle, Vernon Harcourt, 557 

 Pepper (Dr. William), Death of, 372 ; Obituary Notice of, 420 

 Peptone Committee Experiments, the, 585 

 Perfumes, the Chemical Manufacture of, 398 

 Perigal (Henry), Death of, 131 

 Peringuey (L.), South African Coleoptera, 423 

 Perini (N.), Dante's Ten Heavens, Edmond G. Gardner, 362 

 Periodic Comets, M. Schulhof, 526 



Peripatiis noV(e-britannice, Development of. Dr. A. Willey, 142 

 Perkin (A. G. ), Yellow Colouring Matter of Leaves of Arc- 



tostaphylos uva ursi, 23 ; Azobenzene Derivative of Chrysin, 



238; Constituents of " Waras," 238 

 Perkin (W. H., jun.). Synthesis of Cis- and Trans-Caronic 



Acids, 23 ; Lauronolic Acid, 23 ; Action of Bromacetal on 



Sodium Derivative of Ethylic Malonate, 23 

 Perot (A.), Method of determining Order of Interference 



Fringe of High Order, 143 

 Perrier (Prof. Ed.), Presidential Address to International Sea- 

 Fisheries Congress at Dieppe, 511 

 Perrine, Comet (March 19), 19, 42, 60; Dr. Berberich, 400 

 Perrine, Comet (June 14), 232, 280 

 Perrot (Louis), Thermo-Electric Electromotive Forces in 



Crystallised Bismuth, 23 

 Perseid Meteoric Shower, the Recent, W. F. Denning, 371 

 Perthshire, the Flora of, Dr. F. Buchanan White, 124 

 Petavel (J. E.), Heat dissipated by Platinum Surface at High 



Temperatures, 237 

 Peters (J. P.), Nippur ; or, Explorations and Adventures on 



the Euphrates, 243 

 Petrie (Prof. W. M. Flinders), Prehistoric Egypt, 31 

 Petroliferous Sands and Mud Volcanoes in Burma, Dr. Fritz- 



Noetling, 20 

 Pflanzen, Organographie der, Dr. Goebel, 74 

 Pharmacology, its Aims and Methods, Dr. W. J. S. Jerome, 



158 

 Pharmacy : Death of Dr. J. E. de Vry, 352 ; the British 



Pharmaceutical Conference, Presidential Address of Dr. 



Charles Symes, 398 ; the Chemical Manufacture of Perfumes, 



398 

 Phillips (Dr.), the Climate of Cuba, 256 

 Phillips (Prof.), Form of Protoplasmic Body in Florideae, 633 

 Philology : Origin of Phoenician Alphabet Characters, Prof. 



Crum Brown, 143 

 Phisalix (Dr. C), on the Existence of an Oxydase in the Skin 



of certain Batrachians, 485 

 Phcenician Alphabet Characters, Origin of. Prof. Crum Brown, 

 „I43 



Phoroglucinol, Bone-Softening by, J. J. Andear, 47 

 Phosphorescence, Herbert Jackson, 559 ; Deep-Sea Dredging 



and the Phosphorescene of Living Creatures at great Sea 



Depths, E. L, J. Ridsdale, 497 

 Phosphorus in Lucifer Matches, 345 



Photography : at the Crystal Palace, 14 ; Submarine Photo- 

 graphy, Prof. Louis Boutan, 18 ; Electrical Impressions on 



Photographic Plates, A. S. Bates, 32 ; Photographic Action 



of Printer's Ink, W. Trueman Tucker, 32 ; Printer's Ink and 

 Photographic Plates, Rev. F. J. lervis-Smith, F.R.S.,78; 

 Phase Reversal and Silver Zone Plates, R. W. Wood, 61 ; 

 Photography by the Aurora Borealis, J. E. Turner, 88 ; Im- 

 provement of Over- Exposed Negatives, M. Mercier, 120 ; 

 Kromskop Colour Photography, Frederick Ives, 124; Printed 

 Matter and Photographic Plates, A. A. C. Swinton, 125 ; 

 the Action of Electric Discharges on Photographic Plates, 

 A. A. C. Swinton, 151 ; Figures produced on Photographic 

 Plates by Electric Discharges, J. A. McClellan, 142 ; Action 

 of Ammonium Persulphate on Silver in Negatives, MM. 

 Lumiere and Seyewetz, 168 ; Proof of Existence of Thin 

 Zenker's Plates in Colour Photographs by Lippmann's 

 Method, R. Neuhauss, 187 ; Reproduction by Photographic 

 Processes, T. Bolas, 204 ; a New Photographic Printing 

 Paper, 213 ; the Scientific Side of Photography, John Stuart, 

 254 ; Practicum der Wissenschaftlichen Photographie, Dr. 

 Carl Kaiserling, 268 ; Comparison of Shadows of Rontgen 

 Rays by Photography, Prof. Villari, 303 ; Photographische 

 Bibliothek, Nos. 9 and 10, Das Fernobjektiv, Hans Schmidt, 

 Der Gummidruck, J. Gaedicke, 343 ; Photography Annual : 

 a Compendium of Photographic Information with a Record 

 of Progress in Photography for the Past Year, 466 ; 

 Meteorological Photography, Mr. Clayden, 534 ; Photo- 

 graph of the Chromosphere, Prof. Naegamvala, 526 ; 

 the Manufacture of Kinematograph Films, 552 ; Dr. W. J. 

 Russell on the Action exerted by certain Metals and other 

 Organic Substances on a Photographic Plate, 556 ; Mr. C. H. 

 Bothamley on the Action of certain Substances on the Un- 

 developed Photographic Image, 557 ; Prof. Percy Frankland 

 on an Additional Photographic Action — that of Bacteria, 557 ; 

 Triplet Lightning Flash, C. E. Stromeyer, 570 ; Photograph- 

 ing Lightning by Day, F. H. Glew, 627 ; Mr. Francis Galton 

 on Photographic Records of Pedigree Stock, 584 

 Phylakopi, Melos, Excavations, the, Mr. Hogarth, 627 

 Physics : Notes on Observations, Sydney Lupton, 7 ; Rontgen 

 Rays and Ordinary Light, Prof. J. J. Thomson, F.R.S., 8; 

 the New Physical Research Laboratory at the Sorbonne, 12 ; 

 the Flow of Water, Prof. H. S. Hele-Shaw, 34, 520; Flow 

 of Water shown by Colour Bands, Prof. Osborne Reynolds, 

 F.R.S., 467; Prof. H. S. Hele-Shaw, 467; Collapse of 

 Spherical Shell under Pressure, Prof. H. Schoentjes, 40 ; an 

 Elementary Course of Physics, 51 ; on Evaporation of Iron 

 at Ordinary Temperature, H. Pellat, 71 ; Liquefaction of 

 Hydrogen, 55 ; Dr. W. Hampson, 77, 174, 246, 292 ; Prof. 

 J. Dewar, F.R.S., 125, 199, 270, 319; Physical Society, 93, 

 119, 166, 215 ; Wiedemann's Annalen, 93, 117, 187, 335, 491 ; 

 Die fundamentalen physikalischen Eigenschaften der Kry- 

 stalle in elementarer Darstellung, Dr. Woldemar Voigt, W. H. 

 and G. Chisholm Young, 99 ; Structures formed by Drying 

 Fluid with Particles in Suspension, C. A. Raisin, 117 ; New 

 Method of Measuring Dip and Horizontal Intensity, G. 

 Meyer, 117 ; the Theory of Sound, J. W. Strutt, Baron Ray- 

 leigh, F.R.S., 121 : the Rudiments of Physics and Chemistry, 

 123 ; on a New Constituent of Atmospheric Air, Prof. W. 

 Ramsay, F.R.S., and Morris W. Travers, 127 ; the Physics 

 of Timber, S. T. Neely, 130 ; Figures produced on Photo- 

 graphic Plates by Electric Discharges, J. A. McClelland, 142 ; 

 on Laboratory Arts, Richard Threlfall. C. V. Boys, F.R.S., 

 145 ; Diffusive Convection, A. Griffiths, 167 ; Dendritic 

 Patterns caused by Evaporation, Prof. G. H. Bryan, F.R.S., 

 174 ; Catherine A. Raisin, 224 ; Method of Measuring 

 Surface Tension of Liquids, Dr. F. T. Trouton, F.R.S., 191 ; 

 a New Hydrometer, Rev. H. O'Toole, 191, 524 ; Apparatus 

 for Drying Bodies in Vacuo, R. J, Moss, 191 ; Liquid Air at 

 One Operation, Lord Rayleigh, F.R.S. , 199; the supposed 

 Photographs of Currents from Human Body, Dr. A. Guebhard, 

 207 ; James Clerk Maxwell and Modern Physics, R. T. 

 Glazebrook, F.R.S., Prof. A. Gray,. F.R.S., 219 ; Torsional 

 Oscillations of Wires, Dr. W. Peddie, 239 ; the Doctrine of 

 Energy : a Theory of Reality, 269 ; a First Year's Course of 

 Practical Physics, J. F. Tristram, 269 ; some Conditions 

 affecting Geyser Eruptions, T. A. Jaggar, jun., 261 ; Com- 

 pressibility of Air as Gaseous Mixture, E. H. Amagat, 287 ; 

 Recueil de Donnees Numeriques Optique, H. Dufet, 344 ; 

 Text- Book of Physical Chemistry, Clarence L. Speyers, 344 ; 

 Local Variation in Intensity of Gravity near Mount Etna and 

 in Eastern Sicily generally, A. Ricco, 354 ; CEuvres com- 

 pletes de Christiaan Huygens, Dr. J. L. E. Dreyer, 361 ; 

 Melting Points of Substances under High Pressure, E. Mack, 

 432 ; the Motion of Falling Spray, Arthur Jenkin, 460 ; 



