Nature, ] 
June 9, 1904 
Index 
XXXIX 
Ponies, the Multiple Origin of Horses and, Dr. J. Cossar 
Ewart, F.R.S., 590 
Pope (W. J.), Preparation of the Tetra-alkyl Derivatives of 
Stannimethane, 239 
Population and Rainfall in India, W. L. Dallas, 623 
Porter (Rev. T. C.), a Method of Mechanically Reinforcing 
Sounds, 164 
Potato, Aérial Tubers on the, W. Traylen, 465; M. T. M., 
465 
Potter (C. E.), Constitution of Chrysophanic Acid and o1 
Emodin, 95 
Potter (Prof. M. C.), the Heart-wood of Trees, 494 
Poulton (Prof.), Colour Relation between Lepidopterous 
Larve and Surroundings, 549 
Powell (Major J. W.), Obituary Notice of, 328 
Powell (W.), on a Process for Seasoning and Preserving 
Timber, 20 
Praeger (R. Lloyd), Exploration of the Caves of Kesh, 
County Sligo, 189 
Prahistorischen Commission der Kais. 
Wissenschaften, Mittheilungen der, 277 
Pratt (Edwin A.), American Railways, 52 
Praxis of Urinary Analysis, the, Dr. Lassar-Cohn, Prof. 
R. T. Hewlett, 54 
Prebble (W. C.), Electrolytic Analysis of Gold, 551 
Precipitines, Origin of, R. Kraus and C. Levaditi, 576 
Prehistoric Pile-structures in Pits, L. M. Mann, 541 
Prehistoric Studies in Austria, Julius Teutsch, 277; Dr. 
Moriz Hoernes, 278 
Pretty (W. H.), National Science Scholarships, 271 
Prevention of Infectious Diseases, Infection and immunity 
with Special Reference to the, George M. Sternberg, 
6 
Binceton Expedition to Patagonia, the Santa Cruz Fauna 
and the, W. B. Scott, 253; P. Dusén, 253; A. W. Evans, 
253; G. Macloskie, 253; J. B. Hatcher, 253 : 
Printing, Thin-film Electrolysis and a Proposed Application 
to, C. R. Darling, 551 : 
Prior (G. T.), New Sulphostannite of Lead from Bolivia, 
Teallite, 382 ‘ 
Proceedings of the London Mathematical Society, 173 
Produits coloniaux d’Origine animale (Bibliothéque Colo- 
niale), les, H. J. de Cordemoy, 28 
Progress, Scientific Investigation and, Prof. Ira Remsen, 
06 
Peyjection of Imitation Spinthariscope Appearance, Sir 
Oliver Lodge, F.R.S., 247; J. B. B., 270 
Proportion des goldnen Schnitts, die, J. Kubler, 292 
Protozoa and Disease, Dr. Gary Calkins, 541 
Proust (Prof.), Death of, 133 } ; 
Psychology : Psychology as an Experimental Science, A. 
Pioda, 16; Life in Mind and Conduct : Studies of Organic 
in Human Nature, Henry Maudsley, 102; die “ Seele vy 
als elementarer Naturfaktor, Studien iiber die Bewe- 
gungen der Organismen, Hans Driesch, 197; Outlines 
of Psychology, an Elementary Treatise with Some Prac- 
tical Applications, Josiah Royce, 219; Etudes de Psy- 
chologie physiologique et pathologique, E. Gley, 244; a 
Study of British Genius, Havelock Ellis, 578 
Psychophysical Idealism : Why the Mind has a Body, C. A. 
Strong, 53 
Pulkowa Observatory, Publications of the, M. Nyrén, 114 
Pullar (Laurence), Bathymetrical Survey of the Freshwater 
Lochs of Scotland, 546 
Punnett (R. C.), Nutrition and Sex Determination in Man, 
Akademie der 
Putdfication of Water Highly Charged with Vegetable 
Matter, with Special Reference to the Effect of Aération, 
Osbert Chadwick and Bertram Blount, 185 
Pushing to the Front, or Success under Difficulties, Orison 
Swett Marden, 246 
Quadrantid Meteor Shower of 1904, the, John R. Henry, 
272 
Quarrying, the Elements of Mining and, Sir C. Le Neve 
Foster, F.R.S., 603 
Quaternions: Etude sur les Quantités mathématiques, 
Grandeurs dirigées, Quaternions, Prof. Claro Cornelio 
Dassen, 604; Introduction to Quaternions, Prof. Philip 
Kelland, F.R.S., and Prof. P. G. Tait, 604; Bibliography 
of Quaternions and Allied 
Alexander Macfarlane, 604 
Quénisset (F.), Magnetic Disturbances and Sun-spots, 72 ; 
Solar Phenomena and Magnetic Storms, 90 
Systems of Mathematics, 
Rabies: its Place among Germ-diseases and its Origin in 
the Animal Kingdom, David Sime, 602 
Rabot (Charles), Revue de Glaciologie, No. 2, 1902, 299 
Radial Velocities of B Aurigze, G. A. Tikhoff, 185 
Radial Velocities of Twenty Orion Stars, Messrs. Frost 
and Adams, 446 
Radiant Energy, a Working Power in the Mechanism of 
the Universe, R. W. O. Kestel, ror 
Radiant Point of the 1903 Leonid Showers, 331 
Radiation from an Electron Describing a Circular Orbit 
Oliver Heaviside, F.R.S., 293, 342 ; 
Radiography : Radium and Plants, Dr. Henry H. Dixon, 
5; Influence of Radium Rays on the Development and 
Growth of the Lower Fungi, J. Dauphin, 311; Heating 
Effect of the Radium Emanation, Prof. Arthur Schuster, 
F.R.S., 5, 55; Prof. E. Rutherford, F.R.S., and Prof. 
H. T. Barnes, 126; the Heat of Radium, Prof. Edmund 
J. Mills, F.R.S., 224; Suggested Existence of Radium 
in the Sun, 12; Scintillating Phosphorescence of Certain 
Substances under the Action of Radium Rays, Henri 
Becquerel, 23; Radium and Animals, E. C. Willcock, 
55; Action of Radium on Bacteria, Dr. Henry H. Dixon 
and J. T. Wigham, 81; the Sensation of Light Produced 
by Radium Rays and its Relation to the Visual Purple 
W. B. Hardy and H. K. Anderson, 94; a Simple Lecture 
Experiment with Radium Rays, Dr. L. Bleekrode, 103 ; 
Colour Changes Brought About by Radium Rays, W. 
Ackroyd, 113; Action of Radium Rays upon the Tegu- 
ments, Georges Bohn, 120; a Radium Bromide Vacuum 
Tube, T. Thorp, 167; Secondary Radiation Produced by 
Radium Rays, L. R. Wilberforce, 198; Does the Radio- 
activity of Radium Depend upon its Concentration? Prof. 
E. Rutherford, F.R.S., 222; Action of Radium upon 
Different Tissues, J. Danysz, 240; y Rays from Radium, 
J. R. Ashworth, 295; the Source of the Energy of 
Radium Compounds, William Ackroyd, 295; Researches 
Relating to Radium, Frederick Soddy, 297; the Action of 
Radium Bromide on the Electrical Resistance of Bis- 
muth, R. Palliot, 311; Destructive Action of Radium, 
Lord Blythswood, 317; Photographic Action of Radium 
Rays, S. Skinner, 335: Prof. Henry Stroud, 560; Gases 
Given Off or Occluded by Radium Bromide, MM. Dewar 
and Curie, 335; on the Gas ‘* Occluded or Liberated ’’ 
by Radium Bromide, Profs. Dewar and Curie, 399; 
Examination of a Sample of Gas Occluded in Radium 
Bromide, Profs. Curie and Dewar, 444; the a Rays of 
Radium, J. T. Nance, 343; Frederick Soddy, 343; 
Radium Débris, John B. Coppock, 365; Water in which 
a Tube Containing Radium is Immersed Becomes Radio- 
active and Capable of Affecting a Photographic Plate, 
Prof. Wm. Harvey King and Mr. Hammer, 375; the 
Emanation Given Off by Radium, Prof. J. A. McClel- 
land, 383; Influence of the Radium Radiations on the 
Toxicity of Snake Poison, C. Phisalix, 432; Action of 
the Radium Radiations on Colloids, Hamoglobin, Fer- 
ments, and the Red Corpuscles, Victor Henri and André 
Mayer, 432; Rontgen Rays and the y Rays from Radium, 
A. S. Eve, 436; Nature of the y Rays from Radium, 
Prof. E. Rutherford, F.R.S., 436; Secondary Radiations 
of Radium, J. S. Davis, 489; Disappearance of the 
Radio-activity Induced by Radium on Solid Bodies, P. 
Curie and J. Danne, 503; Fluorescent Bodies Excited by 
Radium, 523; Decomposition of Hydrogen Dioxide under 
the Influence of Radium Bromide, H. J. H. Fenton, 527; 
Law of Disappearance of the Activity Induced by Radium 
after Heating the Substances Rendered Active, P. Curie 
and J. Danne, 528; Striking Observation on a Tube of 
Radium Bromide, Herr Dorn, 567; Electrochemical Be- 
haviour of Radium, Alfred Coehn, 567; New Effects Pro- 
duced by the n-Rays, R. Blondlot, 47; on the Storage of 
the n-Rays by Certain Bodies, M. R. Blondlot, 72; 
Reinforcement of the Action of the Bundle of Light Rays 
upon the Eye, when Accompanied by the n-Rays, R. 
Blondlot, 119; the n-Rays of M. Blondlot, 182; n-Rays 
also Emitted by the Human Body, A Charpentier, 182 ; 
