XXXVl 



Index 



[Nature, 

 Octoler <), 1919 



Phosphatic Nodules of Trichinopoly and their Availability 

 as Manure, M. R. R. Sivan, 137 



Phospho-organic reserve principle of Green Plants, Two 

 crystallised Salts of the, S. Posternak, 380 



Photographic : Almanac, The British Journal, and Photo- 

 grapher's Daily Companion, 1919. Edited by G. E. 

 Brown, 3 ; Plates, The Sensitiveness of, to X-rays, 

 Miss N. C. B. Allen and Prof. T. H. Laby, 177 



Photography: Aerial, 115; Its Principles and Applications, 

 A. Watkins. Second edition, 461 



Photophoresis, F. Ehrenhaft ; R. W. Lawson, 514 



Physical Chemist, The Complete, 161 



Physiological Chemistry, 504 ; Practical, S. W. Cole. 

 Fifth edition, 504 



Physiology : A Text-book of, Drs. M. Flack and L. Hill, 

 402 ; and Metaphysics, 412 ; Applied, 341 ; for Students 

 and Practitioners, 402 ; Human, Vol. IV. "The Seiise- 

 organs," Prof. L. Luciani. Translated by F. A. Welby, 

 61 ; in Medicine, ITie position of, Sir E. S. Schafer, 

 173, 210; The New, and other Addresses, Dr. J. S'. 

 Haldane, 261 



Phytophthora meadii, a new Fungus Disease of Hevea 

 hrasiliensis, W. McRae, 355 



Pilot-balloons, Further Measurements on the rate of 

 Ascent of, Capt. C. J. P. Cave and J. S. Dines, 259 



Pine, The Common, indigenous in Northern Sweden, N. 

 Sylven, 176 



Pinus pinea, Coloration produced in Clav by Injured Roots 

 of, B. de St. J. V. d. Reit, 460 



Plaie de Guerre, Biologie de la, Prof. P. Delbet and N. 

 Fiessinger, 501 



Planchet Reptile, The, H. C. Das-Gupta, 400 



Plane, London. Historv of the : Prof. A. Henrv and Miss 

 M. G. Flood, 38;' Prof. A. Henry, 333 



Planet beyond Neptune, A, Prof. W. H. Pickering, 514 



Planetary Nebulae : Distances of Six, A. van Maanen, 19 ; 



Planets, Order of the, Dr. H. Chatley, 10; 331 



Plankton, The Quantitative Study of. Dr. E. j, Allen, 239 



Plant : Formations. Statistical Investigations on, C. Rann- 

 kiaer, 33 ; Genetics, J. M. and M. C. Coulter, 21 ; 

 Physiology, 381 



Plantation Rubber Research, 176 



Plants : Life Movements in, Sir J. C. Bose, 381 ; Preserved 

 by submitting them to the Action of Formalin Vapour, 

 Miss M. Rathbone, 98 



Platonism and Human Immortality. Dean Inge, 297 



Platyzoma microphyllum, R. Br., The Stelar Anatomy of, 

 Dr. J. M'L. Thompson, 18 



Pleiades, The Parallax of the, Dr. W. J. A. Schouten, 374 



Polarisation of Light, Prof, F. J. Cheshire, 239 



Polariser, A new, G. Brodsky, 97 



Polyclad Turbellaria of the Japanese Coasts, The, M. Yeri 

 and T. Kaburaki, 472 



Polyclads, Method of Progression in, W. J. Crozier. 10 



Polyneuritis, Acute Infective, Sir J. R. Bradford, E. F. 

 Bashford, and J. A. Wilson, 150 



Porous Walls, New, filtering unsvmmetricallv, L. Benoist, 

 419 



Port Erm Biological Station, Easter Vacation Work 

 at the, 112 



Portsmouth Municipal College, E. Rawson appointed Head 

 of the Mechanical and Civil Engineering Department 

 of the, 4i;8 



Pot Attack, Some Phenomena of. Dr. W. Rosenhain, 297 



Potash Famine, Passing of the American, Prof. P. G. H. 

 Boswell, 473 



Potato: -Beetles. Evolution in, '517; The Cultivation, Com- 

 position, and Diseases of the. Articles on, 133 



Potatoes, Report on the Composition of, Grown in the 

 United Kingdom. 192 



Poultry : Bacteria of the Paratvphoid Group and the Causa- 

 tion of Disease in, P. Hadlev, M. Elkins, and D. Cald- 

 well, 310: Physiolo£jv of Sex and Reproduction in. 

 Prof. R. Pearl and Miss A. M. Boring, 332 



Precious Stones. The Production of, for the year 19 17, 

 Dr. G. F. Kunz, 326 



Preservation of Fruit without the Addition of Sugar, etc., 

 G. Bertrand, 340 



Pressure and Tiem'perature, Absolute Scales of, F. J. W. 

 Whipple, 296 



Prickly Pear, Possibilities of the, as a source of Industrial 



Alcohol, etc., 232 

 Priestley. Joseph, D. H. Peacock, 463 

 Prime Numbers, Question Relating to, A. Mallock, 305 ; 



Prof. G. N. Watson, 364 

 Printing on Paper in Natural Colours, a New Process of, 



S. H. Williams, 133 

 " Pritzel's Index," Revision of, 328 

 Productive Duality, 361 



Professorial and Non-professorial Teaching Staffs of Eng- 

 land, Wales and Ireland, Conference of, 199 

 Proper Motions, Determination" of, Innes, 194 

 Propositions : What they are and how they mean, B. 



Russell, 413 

 Propyl Acetate, Saturated Vapour Pressures and Latent 



Heats of Evaporation of, at various temperatures, E. 



Arifes, 379 

 Protective Coloration of Birds and Eggs, G. Grace, 446 

 Protozoal Parasites in Cainozoic Times, Dr. G. D. Hale 



Carpenter, 46 

 Pseudobonellia. Prof. T. H. Johnston and O. W. Tiegs, 



Psychical Research. Experiments in, at Leland Stanford 

 Junior University, Dr. J. E. Coover, 1315 



Psychology : Abnormal, and Education, 382 ; and Physiology, 

 Proposed Establishment of an Institute of Commercial 

 and Industrial, 309 ; Present-day Applications of, with 

 Special Reference to Industry, Education, and Nervous 

 Breakdown, Lt.-Col. C. S'. Myers, loi ; The Useful- 

 ness of, loi 



Psjchoses in the Expeditionary Forces, Capt. O. P. N. 

 Pearn, 371 



Public Statistics, The Collection and Presentation of, G. 

 Drage, 385 



Pulverised-fuel Locomotive, A, 193 



Punjab, Irrigation Schemes in the, 329 



Pyocvanic Bacillus, An Achromogenic Variety of the, C, 

 Gessard, 320 



Quantitative Analysis, An Advanced Course in, with 



Explanatory Notes, Prof. H. Fay, 362 

 Queen's University, Kingston, Ontario : An Additional 



Endowment, 318; Grant by the Carnegie Corporation 



to the Medical Department of, 96 

 Queensland : The Meso«>lc Floras of. Dr. Walkom, 450 ; 



University, R. W. H. Hawken appointed to the Chair 



of Engineering in, 198 



R 34: Description of, 411; The Return of, 388 



Rabies, Cases of, in England, 149 



Radiation, lonisation and, Dr. R. A. Houstoun, 145 



Radio : -active Lead, The Problem of, Prof. T. W. Richards, 

 74, 93 ; -communication. The Principles of, Dr. A. 

 Russell, 423 ; -telegraphic Investigations in connection 

 with the Solar Eclipse of May 29, 1919. 196; -tele- 

 graphy by Infra-red Radiation, J. Hebert-Stevens and 

 A. Larigaldie, 479 ; Practical, Progress in, G. Isaacs, 

 249 ; Standard Tables and Equations in, B. Hoyle, 144 



Rainfall : at Southampton and London, 1862-1918, Sir C. 

 Close, 338 ; in England, A. A. Barnes, 177 ; to Con- 

 figuration, Relation of, in the British Isles, C. Salter, 

 91; The Secular Variation of, C. E. P. Brooks, 177; 

 Variations, 177 



Ralegh, Sir Walter, A Memorial Tablet to, unveiled in 

 Jersey, 471 



Ramsay : Memorial Fellowships, Forthcoming Appointment 

 of, 370; Fund, The, 248, 295; Sir William, Work of, 

 Prof. C. Mbureu, 412 



Eana subsigillata. Skull and Aflfinities of, Miss J. B. 

 Procter, 38 



Range-finders. Modern Single-observer, J. W. French, 405 



Rathmines Technical Institute, W. Elliott appointed Prin- 

 cipal of the, 358 



Rats : Experiments with Two New Colour Varieties of, 

 J. B. S. Haldane, 432 ; The Food of, T. Steel, 345 



Ray Society: Annuar General Meeting of the, 69: Prof. 

 ' Mcintosh re-elected President of the, 70 



Reconstruction : Problems, 387 ; The Spiritual Foundations 

 of, A Plea for New Educational Methods, Dr. F. H. 

 Hay ward and A. Freeman, 143 



