Index 



r Nature, 

 Vjune 8, .9 



a History of Classifications of the Sciences, Robert 

 Flint, 505 



Phisalix (C), Influence of the Radium Emanation on the 

 Toxic Power of Snake Poison, 45b 



Phonetics : Ubcr das Studium der Sprach Kurven, E. \V. 

 Scripture, Prof. John G. McKendricfc, F.R.S., 250 



Phosphorescence caused by the Beta and Gamma Rays of 

 Radium, G. T. Beilby, 476 



Photograms of the Year 1904, 175 



Photography •. the Science and Practice of, Chapman Jones, 

 C. E. Kenneth Mees, 29 ; a Problem Concerning Wood 

 and Lignified Cell-walls, Prof. .Marshall Ward, F.R.S., 

 71 ; Photography on Tour, 76 ; Dr. Koenig's Method of 

 Colour Photography, S3 ; Photographic Method of Re- 

 cording the Temperature of Pieces of Steel during Cool- 

 ing, H. Le Chatelier, 88; Dr. Schleussner's Dry Plates, 

 88 ; the Photographic Spectrum of Jupiter, G. Millochau, 

 Sq ; Retouching, .Arthur \\"hiting, 100; Practical Re- 

 touching, Drinkwater Butt, 317; Celestial Photography 

 at High .Altitudes, Prof. Payne and Dr. H. C. Wilson, 

 114; .Advanced Hand-Camera Work, Walter Kilbey, 124; 

 Photograms of the Year 1904, 175 : the British Journal 

 Photographic Almanac, 1905, 221 ; Practical Professional 

 Photography, C. H. Hewitt, 248; on M. Bordier's Sup- 

 posed Demonstration of ii-Rays by Photographic Methods, 

 M. Chanoz and M. Perrigot, 2S7 ; Intensification and 

 Reduction, Henry W. Bennett, 341 ; New Lambex System 

 of Daylight Loading and Film and Plate Changing, 

 Messrs. R. and J. Beck, 352 ; Photographic Spark 

 Spectra of Titanium and other Metals, Dr. Lohse, 373 ; 

 the Bruce Photographic Telescope, Prof. Barnard, 424 : 

 Toning Bromide Plates, R. E. Blake Smith, 43S ; the 

 Theory of Photographic Processes, on the Chemical 

 Dynamics of Development, .S. E. Sheppard and C. E. K. 

 Mees, 454: Intensity of Photographic Impressions pro- 

 duced by Feeble Illuminations, C. Gutton, 455 ; Photo- 

 graphic Radiation of some Mercury Compounds, R. de 

 J. F. Struthers and J. E. Marsh, 455 ; How to Photo- 

 graph with Roll and Cut Films, John A. Hodges, 460 ; 

 Photographic .Activity of Hydrogen Peroxide, J. Precht 

 and C. Otsuki, 46S : Photography for the Sportsman 

 Naturalist, L. W. Brownell, 483 ;' Photography of the 

 Solar Corona at the Summit of Mont Blanc, A. Hansky, 

 527 ; Photography of the Corona without a Total Eclipse, 

 A. Hansky, 344 ; British .Association Geological Photo- 

 graphs, 538 ; Photograph of a Lightning Flash showing 

 the .Air in Incandescence, Em. Touchet, 600; Photo- 

 graphy of Planetary Nebulae, W. S. Franks, 61S 



Photometry : zur Theorie der Extinktion des Lichtes in der 

 Erdatmosphare, Dr. A. Bemporod, 402 



Photomicrography by Ultra-violet Light, Dr. A. Kohler, 517 



Phototropismus der Tiere, Untersuchungen iiber den. Dr. 

 Em. Radl, 265 



Physical Conditions of the Planets, Prof. T. J. J. See, 424 



Physical Degeneration, Report of the Inter-departmental 

 Committee on. Sir Lauder Brunton, 252 



Physical Education and Improvement, the Proposed National 

 League for, -Sir Lauder Brunton, 252 



Physical History of the Victoria Falls, the, .A. J. C. 

 Molyneux, 619 



Physics : les Lois naturelles, F^lix Le Dantec, 5 ; Physical 

 .Society, 47, 95, 142, 190, 358, 455, 502, 550, 622 ; 

 Radiation Pressure, Prof. J. H. Poynting, F.R.S., 

 at Physical Society, 376 ; Radiation Pressure, Prof. 

 J. H. Poynting, F.R.S., 200; the Pressure of 

 Radiation, Oliver Heaviside, F.R.S., 439; an Inter- 

 ference .Apparatus for the Calibration of Extenso- 

 meters, J. Morrow and E. L. Watkin, 47; New Build- 

 ings of the University of Liverpool, the George Holt 

 Physics Laboratory, 63 ; Deep-water Waves, Prof. Lamb. 

 70 ; on Deep Water Ship Waves, Lord Kelvin, 382 ; the 

 Conductivity of Gases from a Flame, Paul Langevin and 

 Eugene Bloch, 96 ; .Attempts to Decide by Physical 

 Methods the Nature of Isodynamic Substances, M. Briihl, 

 113; Dr. W. H. Perkin, 113; F. Giolitti, 113; Presence 

 of Radium throughout the Earth's Volume as Com- 

 pensating for the Loss of Heat by Conduction, C. 

 Liebenow, 113; Tension of Carbonic .Acid in the Sea, and 

 on the Reciprocal Influence of Carbonic .Acid of the .Sea 

 .ind that of the .Atmosphere, .August Krogh, 120; 

 Obituary Notice of Prof. Karl Selim Lemstrcim, Prof. 



.Arthur Rindell, 129; Physical Properties of a Series of 

 Alloys of Iron, W. F. Barrett, W. Brown, and R. A. 

 Hadfield, 132 ; Electrical Conductivity and other Pro- 

 perties of Sodium Hydroxide in Aqueous Solution, W. R. 

 Bousfield and T. M. Lowry, 141 ; the Colloidal State of 

 Matter, G. E. Malfitano, 143 ; the Nobel Prize for Physics, 

 awarded to Lord Rayleigh, 155 ; the Human Breath as a 

 Source of the lonisation of the .Atmosphere, Messrs. 

 Elster and Geitel, 157 ; the Charge of the a Rays from 

 Polonium, Prof. Thomson, F.R.S., 166; Some Scientific 

 Centres, vi., the Physical Laboratory at the Museurrt 

 d'Histoire naturelle. Prof. Henri Becquerel, John Butler 

 Burke, 177 ; Death of M. Jeunet, 181 ; Physical Char- 

 acters of the Sodium Borates, with a New Method for 

 the Determination of Melting Points, C. H. Burgess and 

 .A. Holt, jun., 189; Lefons sur la Propagation des Ondes 

 et les Equations de I'Hydrodynamique, Jacques Hada- 

 mard, 196 ; het Natuurkundig Laboratorium der Ryks- 

 Universiteit te Leiden in de Jaren 1882-1904, 218; Im- 

 provements in Mercury .Air-pumps of Sprengel Type, 

 Josef Rosenthal, 233 ; the Warming of Different Layers 

 of Liquid by the Sun's Rays, Dr. von Kalecsinszky, 255; 

 a Fundamental Formula in the Kinetic Theory of Gases, 

 P. Langevin, 263 : Light Energy, its Physics, Physio- 

 logical -Action and Therapeutics, Dr. Margaret A. Cleaves, 

 Dr. Reginald Morton, 269 ; Naturbegriffe und Naturur- 

 teile, Hans Driesch, 270; Death of Dr. Anton Mijttrich, 

 278 ; Experiment for Showing the Pressure due to Sound 

 Waves, Prof. R. W. Wood, 2S0 ; .Attraction between 

 Liquid Drops suspended in a Liquid of the same Density, 

 V. Cr^mieu, 287 : the Recent Development of Physical 

 Science, W. C. D. Whetham, F.R.S., 291 ; a Simple 

 Model for illustrating Wave-motion, K. Honda, 295 ; 

 Lissajous's Figures by Tank Oscillation, T. Terada, 296; 

 Law of the Permanent Level, Dr. C. M. van Deventer, 303 ; 

 the Melting of Floating Ice, 366 ; Superfusion Phenomena, 

 Drs. Tullio Gnesotto and Gino Zanetti, 305 ; Kinematics 

 and Dynamics of a Granular Medium in Normal Piling, 

 J. H. Jeans, 310; the Anomalous Dispersion of Sodium 

 Vapour, Prof. R. W. Wood, 327 ; the Dual Force of the 

 Dividing Cell, part i., the .Achromatic Spindle-figure, 

 Elucidated by Magnetic Chains of Force, Prof. Marcus 

 Hartog, 333 ; the Rdlc of Diffusion during Catalysis by 

 Colloidal Metals, Dr. Henry J. S. Sand, 333 ; ktle of 

 Diffusion in the Catalysis of Hydrogen Peroxide by Col- 

 loidal Platinum, Dr. George Senter, 574 ; Unrecognised 

 Factors in the Transmission of Gases through Water, 

 Dr. W. E. Adeney, 334 ; the Flow of Water through 

 Pipes, Experiments on Stream-line Motion and the 

 Measurement of Critical Velocity, Dr. H. T. Barnes and 

 Dr. E. G. Coker, 357 ; the Distribution of Velocity in a 

 Viscous Fluid over the Cross-section of a Pipe, and the 

 Action at the Critical Velocity, J. Morrow, 621 ; Com- 

 pressibility of Gases between One -Atmosphere and Half 

 an Atmosphere of Pressure, Lord Rayleigh, F.R.S., 35S ; 

 Determination of Young's Modulus (.Adiabatic) for Glass, 

 C. A. Bell, Dr. C. Chree, F.R.S., 359; Simplified De- 

 duction of the Field and the Forces of an Electron 

 moving in any given way, Prof. Sommerfeld, 373 ; Modu- 

 lus of Torsional Rigidity of Quartz Fibres and its Tem- 

 perature Coefficient, Dr. Frank Horton, 380 ; Apparatus 

 for determining the Density of Small Grains, K. -A. K. 

 Hallowes, 382 ; die bisherige Tatigkeit der Physikalisch- 

 technischen Reichsanstalt, 388 ; die Tatigkeit der Physik- 

 alisch-technischen Reichsanstalt im Jahre 1903, 388; 

 Melting Point of Dissociating Substances, and the Degree 

 of Dissociation during Melting, R. Kremann, 400 ; zur 

 Theorie der Extinktion des Lichtes in der Erdatmo- 

 sphare, Dr. A. Bemporod, 402 ; Thickness of Transparent 

 Sheets of Iron, L. Houllevigue, 407 ; Death of Father 

 Timoteo Bertelli, 420 ; -Absorptive Power of Fluorescent 

 Substances during .Active Fluorescence, E. L. Nichols and 

 Ernest Merritt, 423 ; Obituary Notice of Prof. Emilio 

 \'illari, Prof. .A. R6iti, 446; Method of Illustrating the 

 Laws of the Simple Pendulum, J. Schofield, 455; Pre- 

 cautions Necessary in Execution of Researches Requiring 

 High Precision, jl. Loew-y, 455 ; .Accurate Measurement 

 of Coefficients of Expansion, H. McAllister Randall, 

 469 ; Study of lonisation in Flames, Pierre Massoulier, 

 479; la Mati^re, I'Ether, et les Forces physiques, Lucien 

 Mottez, 486 ; National Physical I.aboratory, 405 ; Use of 



