XXX 



Index 



r Nature, 



L December 13, 



Plankton of the Bay of Biscay, the, G. Herbert Fowler, 317 



Plant Hybrids, Wilfred Mark Webb, 174 



Plant Life, Outlines of, with Special Reference to Form and 

 Function, Prof. Charles Reid Barnes, 30 



Plant Physiology : Chlorophyll a Sensitiser, Prof. Clement 

 Timiriazeff, 102; Dr. Horace T. Brown, F.R.S., 103; Re- 

 cent Investigations on Rust of Wheat, William G. Smith, 

 352 ; Fungus Diseases of Citrus Trees in Australia and their 

 Treatment, D. McAlpine, 494; Ascent of Sap, Dr. Henry H. 

 Dixon, Prof. J. Joly, F.R.S., 572 ; Tobacco, 576 



Plants, a New Geography of. Prof. Alfred Kirchofif, Dr. Otto 

 Stapf, 569 



Plants of the Past, R. Zeiller, 315 



Plarr (Victor), the Centenary of the Royal College of Surgeons, 

 294 



Platforms, Moving, Railways and, Prof. John Perry, F.R.S., 

 412 ; Lieut. -Colonel W. Sedgwick, 436 



Plotosus canitis and the " Snake-stone," Dr. Hervey, 79 



Plumbism, Pottery and, Dr. T. E. Thorpe, F.R.S., 42 



Plumbism in Pottery Workers, W. Burton, 616 



Plummer (W. E.), Liverpool Observatory, 137 ; on some Points 

 connected with the Photography of a Moving Object, 565 



Pochettino (A.), Evaporation not Productive of Loss of Electri- 

 city, 458 



Pocklington (Dr. IL C), on the Radiation of a Black Body on 

 the Electro-magnetic Theory, 564 



Pocock (R. L), Antelopes and their Recognition Marks, 584 



Point Groups, the Present State of the Theory of, Miss F. Hard- 

 castle, 561 



Poirault(M.), Observations on Pythium, 613; Observations on 

 Chytridinere, 614 



Polyandry, Artificial Deformation of Heads and some Customs 

 connected with, Kumagusu Minakala, 437 



Pompeckj (J. J. F. ), the Norwegian North Polar Expedition, 

 1893-1896, to Franz Josef Land, Scientific Results, 146 



Pompeii, its Life and Art, August Mau, 7 



Poncelet (F. ), Human Body as Screen in Wireless Telegraphy, 

 568 



Pope (W. J.), Dextromethylethylpropyl Tin Dextrobromo- 

 camphorsulphonate, 143 ; Ions, 564 ; on Recent Develop- 

 ments in Stereochemistry, 567 



Porta (Dr. A.), the Common Frog-hopper, 532 



Portable Gas Producers, Dr. J. A. Purves, 601 



Portraiture, Analytical, Francis Galton, F.R.S., 320; Photo- 

 graphic Side of Mr. F. Galton's Suggestions, 374 



Potholes and Caves of the Mountain Limestone District of North- 

 west Yorkshire, on the, S. W. Cuttriss, 587 



Potsdam Great Refractor, the New Spectrographs for the, Prof. 

 C. H. Vogel, 459 



Pottery and Plumbism, Dr. T. E. Thorpe, F.R.S., 42 



Pottery Workers, Plumbism in, W. Burton, 616 



Potts (L. M. ), Rowland's New Method for Measuring Electric 

 Absorption, 432 



Pouget (M.), the Alkaline Selenio-antimonites, 24 



Poulsen's Telegraphone, Louis Olivier, 273 



Poulton's (Prof. E. B. ), Photographs illustrating the General 

 Principles of Miillerian Mimicry, 590 



Pouret (Ch. ), Bromination with Aluminium Bromide, 47 



Power (Dr. F. P.), Precipitated Mercurous Iodide, 322 



Poynting (Prof. John H., F.R.S.), Recent Studies in Gravita- 

 tion, 403 



Practical Navigation, 337 



Prawns, Colour-changes in, Dr. Gamble and Mr. Keeble, 555, 

 590 



Precocity, a Physical Basis of, 578 



Preece (Sir William H., F.R.S.), Relative Advantages of 

 Alternate and Continuous Current for General Electrical 

 Supply, with regard to interference with other Interests, 415 ; 

 Wireless Telephony, 564 ; on the Proposed Mono-rail High 

 Speed Electric Railway between Manchester and Liverpool, 

 610 



Prehistoric Antiquities of Rumbold's Moor (near Bradford), on 

 the, Butler Wood, 637 



Preservation of Big Game in Africa, the, E. N. Buxton, 550 



Preservation of Local Antiquities, on the, Butler Wood, 637 ; 

 Dr. A. C. Haddon, 637 



Primes, on the Determination of Successive High, Lieut. - 

 Colonel Cunningham, H. J. Woodall, 561 



Principles of Bacteriology, the, Dr. Ferdinand Hueppe ; Dr. 

 A. C. Houston, 73 



Principles of Mechanics presented in a New Form, the, Hein- 

 rich Hertz, 50 



Prize Subjects of the Paris Societe d'Encouragement, 380 



Projectiles : Les Projectiles des Armes de Guerre ; Leur Action 

 Vulnerante, H. Nimier and Ed. Laval, 313 ; Les Explosifs, 

 Les Poudres, Les Projectiles d'Exercice ; Leur Action et 

 leurs Effets Vulnerants, H. Nimier and Ed. Laval, 313 



Pronunciation, Homochronous Heredity and Changes of, Charles 

 G. Stuart-Menteath, 524 



Protoplasm, Prof. Dr. Max Kassowitz, Prof. H. Marshall 

 Ward, F.R.S., 217 



Psychology : Psychology of Fishes, Dr. R. W. Shufeldt, 63 ; 

 Mental Lapses, H. H. Bawden, 108 ; Monistische Gottes- 

 und-Weltanschaung, J. Sack, 172; Psychologie der Natur- 

 vcilker. Dr. J. Schultz, 220 ; Die Moderne Physiologische 

 Psychologie in Deutschland, W, Heinrich, 245 ; Zur 

 Prinzipienfragen der Psychologie, W. Heinrich, 245 ; an 

 Outline Sketch, Psychology for Beginners, Hiram M. Stan- 

 ley, 245 ; Experimentation on Emotion, Prof. C. S. Sherring- 

 ton, F.R.S., 328; Psychology of Reasoning, Alfred Binet, 

 388 



Psychro, on the Cave of, in Crete, D. G. Hogarth, 637 ; Arthur 

 J. Evans, 637, J. L. Myres, 637 



Puff Balls, Large, W. A. Sanford, 496 



Pullar (Fred P.), a Bathymetrical Survey of the Fresh-water 

 Lochs of Scotland, 65, 263 



Purves (Dr. J. A. ), Portable Gas Producers, 6oi 



Purvis (Dr. G. C), a Possible Preventive of African Horse-sick- 

 ness, Dr. G. C. Purvis, 83 



Puss Moth, Functions of an Organ of a Larva of the, Arthur 

 S. Thorn, 389 ; Function of the Whips of the Larva of the, 

 W. F. Kirby, 413 



Pycraft (W. P.), the Study of Bird-life, 221 



Pye-Smith (Dr. P. H , F.R.S.), Medicine as a Science and 

 Medicine as an Art, 356 



Pythium, Observations on, M. Poirault, 613 ; E. J. Butler, 

 613 ; on the Biology and Cytology of. Prof. Trow, 613 



Qualitative Analysis, Elements of. Dr. G. H. Bailey and G. J. 

 Fowler, 412 



Quantics, Binary, on the Asyzygetic and Perpetuant Covariants 

 of Systems of, Major MacMahon, 561 ; Quantics, Binary and 

 other, on the Symbolism appropriate to the Study of Ortho- 

 gonal and Boolian Invariant Systems which appertain to. 

 Major MacMahon, 561 ; Quantics, n, a Property of the 

 Characteristic Symbolic Determinant of any, in n Variables, 

 Major MacMahon, 561 ; Quaternion Methods Applied to 

 Dynamics, W. G. Barnett, 174 



Quintic Curve cannot have more than Fifteen Real Points of 

 Inflexion, on the Result that a, A. B. Basset, F.R.S., 561 



Rabl (Dr. Carl), Ueber den Bau und die Entwicklung der 

 Linse, 125 



Races of Europe, the, a Sociological Study, William Z. Ripley, 

 Prof. A. C. Haddon, F.R.S., 27 



Racket Feathers, L. W. Wiglesworth, 54 ; the Reviewer^ 54 



Radclifife Observatory, Unpublished Observations at, 1774- 

 1838, Dr. A. A. Rambaut, 64 



Radiation, on the Relation of Radiation to Temperature, Dr. 

 Larmor, 562 ; Prof. Fitzgerald, 562 



Radiography : the Radium Radiation, P. Villard, 47 ; Behaviour 

 of Radium at Low Temperatures, O. Behrenden, 335 ; an 

 Experiment of M. Jaumann, P. Villard, 47 ; Temperature of 

 Potential Gradient in Rarefied Gases, G. C. Schmidt, 92 ; 

 Mechanical Motions under Influence of Kathode and Rontgen 

 Rays, L. Graetz, 92 ; Energy of Kathode Rays, W^. Cady, 

 93 ; the Kathode Rays, P. Villard, 191 ; Discontinuity of 

 Kathodic Emission, P. Villard, 240; Production of Kathode 

 Rays by Ultra-violet Light, P. Lenard, 335 ; Significance of 

 Kathode Rays in connection with Mechanism of Discharge, 

 Dr. Otto Berg, 628 ; Reflection and Mechanical Effect of 

 Kathode Rays", 639 ; Sources and Properties of Becquerel 

 Rays, Prof. G. H. Bryan, F.R.S., 151 ; Meeting of Rcintgep 

 Society, 179 ; the American Holtz Machine, 179 ; Dr. Remy's 

 Localising Apparatus, 180 ; the Radiation of Uranium, 

 Henri Becquerel, 191 ; the Uranium Radiation, Henri Bec- 

 querel, 312 ; Production of X-Rays by Battery Current, J. 



