Index 



r Nature, 

 \_June 14, 1900 



riant Relations : a First Book of Botany, John Coulter, 442 



Plantes Medicinales : Atlas de Photomicrographie des, Drs. 

 Braemer et Suis, 539 



Plants, List of the Genera and Species of New Zealand, A. 

 Hamilton, W. Bolting Hemsley, F.R.S., 146 



Plates, Armour, R. A. Hadfield, 301 



Playfair (Lyon), Memoirs and Correspondence of, First Lord 

 Playfair of St. Andrews, LL.D., F.R.S., Sir WemyssReid, 

 121 



Plowright (Dr. Charles B.), On the Blue Colour in Woad, 331, 

 563 



Plummer (W. E.), Sextant-telescopes, 54 



Pocklington (H. C), Mechanical Methods of Calculating 

 Logarithms, 469 



Pollen, the Potency and Prepotency of. Prof, H. Marshall 

 Ward, F.R.S., 470 



Polytechnic, the South-western, A. T. Simmons, 208 



Pompilian (M.), Automatism of Nerve Cells, 312 



Pomum in Pomo, Miss Tine Tammes, 408 



Pope (T. H.), Manno-galactan and Lrevulo-mannan, 530 



Pope (W. J. ), Asymmetric Optically Active Nitrogen Com- 

 pounds, 94-96 ; MethylethylthetineDextrocamphorsulphonate 

 and Dextro->--bromocamphorsulphonate, 405 ; Dextromethyl- 

 ethyl-«-propyl Tin Iodide, 434 ; Attempts to resolve into 

 Active Constituents Compounds containing Asymmetric Sul- 

 phur Atoms, 373 ; Racemisation during Formation of Benzyl- 

 idene, Benzoyl and Acetyl Derivatives of Dextro-ac- 

 tetrahydro-zS-Naphthylamine, 530 



Popoflf (Boris) the "Rotten Stone" Granite of East Finland, 



Popular Astronomy for December, 208 



Potato-Beetle, Collops Beetle feeding on Larva of Colorado, 



C. E. Mead, 328 

 Potency and Prepotency of Pollen, the. Prof. H. Marshall 



Ward, F.R.S., 470 

 Potsdam, the New Twin Refractor at, 479 

 Potter (Prof.), on a Bacterial Disease— White Rot— of the 



Turnip, 66 

 Powell (F. E.), Electric Bells and Alarms, 562 

 Pozzi-Escot (M.), New Micro-chemical Reaction of Copper, 



288 ; New Micro-chemical Reaction of Palladium, 628 

 Practical Instruction in Physics, State of. Dr. Boris Weinberg, 



515 

 Practical Mathematics, Prof. John Perry, F.R.S., Prof. A. G 



Greenhill, F.R.S. , 582 

 Prawns, Changes of Colour of, F. W. Keeble and F. W. 



Gamble, 552 

 Predominance of Spiral Nebulae, Prof. J. E. Keeler, 87 

 Preece (Sir William Henry, K.C.B., F.R.S.), the Functions of 

 the Engineer, 374 ; the Relations between Electricity and 

 Engineering, 622 

 Preservative, Formalin as a, 204 

 Pressland (A. J.), Elementary Trigonometry, 390 

 Preston (Prof. Thomas, F.R.S.), Some Remarks on Radiation 

 " Phenomena in a Magnetic Field, 11 

 Preston (Dr. Thomas, F.R.S.), Death and Obituary Notice of, 



474 

 Preston (H. L.), Illinois Gulch Meteorite, 529; Two New 



American Meteorites, 626 

 Preventive Medicine, Transactions of the Jenner Institute of 



(late British Institute of Preventive Medicine), 387 

 Prevosk (J. L. ), Death by Electric Discharge, 24 ; Efifects of 



Electric Discharges on Heart of Mammals, 239 

 Priestley (Sir William), Death and Obituary Notice of, 593 

 Prillieux (M.), the Antibes Carnation Disease, 95 ; a Caucasian 



Vine Disease, 383 

 Primeval Scenes, being some Comic Aspects of Life in Pre- 

 historic Times, Rev. H. N, Plutchinson, 150 

 Prior (G. T.), Florencite, 119; the Hamlinite Group of 



Minerals, 579 

 Prismoidal Formula, the, G. H. Knibbs, 167 

 Prizes proposed by the Paris Academy of Sciences for 1900, 237 

 Progress of Agricultural Chemistry, Prof. Maercker, 116 

 Progress in North-western America, W. A. Baillie-Grohman, 



566 

 Pseudo-chalcedonite, A. Lacroix, 407 



Psychology : Anlage and Rudiment, Prof. J. Mark Baldwin, 

 29; Dr. W. H. R. Rivers on the Investigations on Com- 

 parative Psychology made in Torres Straits and New^ Guinea, 

 43 ; Relative Fidelity of Memory Image, Dr. I. M. Bentley, 



60 ; Evolution of General Ideas, Prof. Th. Ribot, 149 ; the 



Royal Society Catalogue and Psychology, Prof. J. Mark 



Baldwin, 226 

 Purification of Trade Waste, the, R. A. Tatton, 281 

 Purington (C. W.), Mining Industries of Telluride Quadrangle, 



Colorado, 600 

 Purves(Dr. J. A.), Modern Lighthouse Apparatus, 393 

 Pumping in Mines, Prof. W. Galloway, 606 



Qualitative Analysis, an Introduction to, H. P. Highton, 514 



Quartic, Solution of the, G. B. Mathews, 55 



Quartz, the Smell emitted by, when Rubbed, E. L. Garbett, 491 



Quartz Thermometers, M. Dufour, 521, 531 



Quelch (J. J.), Zoology of Mount Roraima, 406 



Quick (R. W.), Water Boiled by Cold, 60 



Rabbit, Egg-hatching, 423 



Races of Man, the, an Outline of Anthropology and Ethno- 

 graphy, J. Deniker, Prof. A. C. Haddon, F.R.S., 462 

 Racial Aspect of Voluntary Enlistment, R. C. T. Evans, 200 

 Radais (M.), Chlorophyll-formation in Dark, 532 

 Radiation, Entropy of, J. Vander Waals, junr. , 407 

 Radiation Phenomena, some Remarks on, in a Magnetic Field, 



Prof. Thomas Preston, F.R.S., 11 

 Radicles in Carbon, Determination of, Dr. H. Meyer, 538 

 Radiography : The Secondary Rontgen Rays, J. S. Townsend, 

 95 ; Chemical Action of Rontgen Rays, P. Villard, 143 ; 

 Measurement of Velocity of Rontgen Rays, B. Brenhes, 311 • 

 Influence of Rontgen Rays on Electrical Resistance of Sele- 

 nium, M. Perreau, 167 ; Duration of Emission of Rontgen 

 Rays, B. Brunhes, 604 ; Negative Electrification of Secon- 

 dary Rays produced by means of Rontgen Rays, P. Curie 

 and G. Sagnac, 604 ; Fluorescence of Metallic Compounds 

 under Rontgen and Becquerel Rays, Paul Bary, 531 ; the 

 X-Ray Case Book, for Noting Apparatus, Methods and 

 Results, David Walsh, 150 ; Radio-activity induced by Bec- 

 querel Rays, M. and Mme. Curie, 7 1 ; Chemical Effects of 

 Becquerel Rays, M. and Mme. Curie, 120 ; Magnetic Deflec- 

 tion of Becquerel Rays, F. Giesel, 262 ; Action of Magnetic 

 Field on Becquerel Rays, P. Curie, 287 ; Penetration of Bec- 

 querel Rays not deviable in Magnetic Field, Mme. Curie, 

 287 ; the Absorption of the Becquerel Rays by Solid and 

 Gaseous Bodies, Hon. R. J. Strutt, 539 ; Origin of Energy of 

 Becquerel Rays, Henri Becquerel, 547 ; Phosphorescence 

 Phenomena of Radium Radiation, H. Becquerel, 166 ; Influ- 

 ence of Magnetic Field on Radiation of Radio-active Bodies, 

 H. Becquerel, 192 ; the Radiation of Radio-active Bodies, 

 H. Becquerel, 239 ; Effect of Use of Triphase Currents, M. 

 Delezinier, 335 ; Radmm and Polonium Rays in Magnetic 

 Field, Henri Becquerel, 355 ; Radium and Polonium Rays, 

 Henri Becquerel, 371 ; the Radium Radiations, Henri Bec- 

 querel, 359 ; Dispersion of Radium Rays in Magnetic Field, 

 Henri Becquerel, 407 ; Electric Charge of Deviable Radiuni 

 Rays, M. and Mme. Curie, 483 ; Negative Charge communi- 

 cated by Radium Rays, Henri Becquerel, 498 ; Deviation of 

 Radium Rays in Electric Field, Henri Becquerel, 555 ; Acti- 

 nium Rays, A. Debierne, 573, 580 ; Loss of Phosphorescence 

 by Heat, Gustave le Bon, 579 ; Transmission of Radium 

 Radiation through Substances, Henri Becquerel, 603 ; Reflec- 

 tion and Refraction of Kathode and deviable Radium Rays, 

 P. Villard, 604 

 Rae (J. L. C. ), Underground Temperature, 484 

 Rail, the Flightless, of New Zealand, Prof. W. B. Benham, 576 

 Rails, Development of Manufacture and Use in Great Britain 



of. Sir J. L. Bell, F.R.S., 595 

 Rails, Wear in Timnels of Steel, Thos. Andrews, F.R,S,, 595 

 Railway, the Waterloo and City ; Methods of Construction, H. 

 H. Dalrymple-Hay, 85 ; Electrical Equipment, B. M. Jenkin, 



85 

 Ranvier (L.), Plastic Activity of Animal Cells, 287 

 Ray (A. C), Interaction of Mercurous Nitrite and Ethyl Iodide, 



264 

 Ray (Sidney H.), on the Linguistic Results of the Cambridge 



Expedition to Torres Straits and New Guinea, 42 

 Rayleigh (Lord), Scientific Papers, 588 

 Read (H. M.), Japaconitine, 119 

 Reale Instituto Lombardo, Prize Awards, 420 

 Red Sandstone of Shetland, the Old, 80 

 Refraction Effect of Comet Swift (1899 I), Prof. C. D. Perrine, 



87 



