Nature, 

 NoT'Ciiiber 20, 



190SJ 



Index 



XXXIX 



logie, Dr. Hans Friedenthal, ^04 ; Bodies discovered in 

 the Intestine of tlie Frog, C. C. Dobell, 610; Micro- 

 organisms of Intestinal Putrefaction, Eiie Metchnilioff, 

 62b; Influence of tlie Heating of Urine on Urinary 

 Toxicity, Cli. Boucliard, M. Baltliazard, and jean 

 Cambus, 6S5 ; sec also British Association 



Picliles (S. S.), Constituents of Cyprus (-)riganum Oil, 22 



Pierce (G. W.), Crystal Recliliers for Electric Currents and 

 Electric Oscillations, 280 



Pigmentation Survey of Scolland, the, Messrs. Gray and 

 Tocher, 68; Corr., Mr. Tocher, i8t 



Pigmentation, Mr. J. (iray's Investigations on, by the Use 

 of his Newly Modified Lovibond's Tintometer, Prof. 

 Dubois, 205 



Pigments, .Modern, and their Vehicles, Frederick Maire, 

 Dr. A. P. Laurie, 125 



Pillai (T. Padmanabha), on the Change of Colour in the 

 Eyes of an Attis Spider, 631 



Pinchot (Gifford), " an American Fable," the Question of 

 the Exhaustion of the National Resources, 230 



Pinlierton (R. H.), the Elements of the Geometry of the 

 Conic, 52 



Plague: Reports on Plague Investigations in India, L. 

 Noon, 564 



Plane and Spherical Waves, Models of, J. J. D., 570; 

 G. H. B., 570 



Planets: Life on Mars, E. H. Hankin, 6; the Canals and 

 Oases of Mars, Prof. Lowell, 18 ; Position of the Axis 

 of Mars, Prof. Lowell, 136; Jupiter's Eighth Satellite, 

 Prof. George Forbes, F'.R.S., 30; Fin-ther Observations 

 of Jupiter's Eighth Satellite, Sir W. H. M. Christie, 

 38; Prof. Perrine, 158; Ephemeris for Jupiter's Eighth 

 Satellite, Messrs. Crawford and Etal, 678 ; Elements of 

 the Orbit of Jupiter's Eighth Satellite, Messrs. Crawford 

 and Meyer, 401 ; Recent Observations of Jupiter, Rev. 

 T. E. R. Phillips, 88 ; Observations of Jupiter, Prof. 

 Barnard, 486 ; a Fourth Minor Planet near Jupiter, 

 Dr. Ebell, 158 ; Observations of Jupiter's Satellites, iVI. S. 

 Kostinsky, iii ; Occultation of Jupiter's Satellite II. by 

 Satellite I., Prof. Hartmann, 207; the Albedoes of 

 Jupiter's First and Third Satellites, M. Qu^nisset, 255 ; 

 Micrometer Measures of Jovian Features, Dr. H. E. Lau, 

 330; the Sixth Satellite of Jupiter, Prof. Barnard, 580; 

 the Origin of the Recently Discovered Jovian Satellites, 

 Prof. Tarrida del Marmol, 401 ; Mr. Melotte, 401 ; the 

 Rings of Saturn, Prof. Lowell, 182 ; Saturn's Rings, 

 Prof. Wright, 255 ; a new Saturnian Ring, 612 ; Saturn's 

 Rings, Herr Schaer, 678 ; Prof. Strbmgrcn, 678 ; Prof. 

 Hartw-ig, 678; J. Comas Sola, 678; Eclipses of Saturn's 

 Satellites, Dr. H. Struve, 377; Observation of Phoebe, 

 Saturn's Ninth Satellite, 43^ ; the Palh of the Minor 

 Planet (279) Thule, Dr. A. Wedemeyer, 281 ; the In- 

 equalities in the Motion of the Moon due to the Direct 

 Action of the Planets, Prof. E. W. Brown, F.R.S., 



599 

 Plant Anatomy from the Standpoint of the Development 



and Functions of the Tissues, and Handbook of Micro- 



technic, Prof. W. C. Stevens, 219 

 Plants : Plants of New Zealand, R. M. Laing and E. W. 



Blackwell, 149 ; the London Catalogue of British Plants, 



F. J. Hanbury, 174; Notes on a Toxic Substance Excreted 



by the Roots of Plants, F. Fletcher, 402 ; an .Alleged 



Excretion of Toxic Substances by Plant Rrjots, Howard 



.S. Reed, 541 ; the Improvement of Agricultural Plants, 



M. Schribaux, 438 

 Platania (Prof. G.), Determination of Wind Direction and 



Force at Sea and on the Beaufort Scale, iSi 

 Plate (Prof. Ludwig), Selectionsprinzip und Probleme der 



.Artbildung, ein Handbuch des Darwinismus, 600 

 Plimmer (H. G.), Further Results of the Experimental 



Treatment of Trypanosomiasis, 625 

 Plummer (H. C), the Masses of a Carinje and a Pavonis, 



38; the Orbits of Several Spectroscopic Binaries, 517 

 Plunkett (Sir Horace), Opening Address in Section F at 



the Meeting of the British .Association at Dublin, 652 

 Pohlig (Prof. Hans), Eiszeit und Urgeschichte des 



IMenschen, 148 

 Pole, the Variation of the. Prof. Albrecht, 183 

 Pollination of the Olive, the. Prof. T. D. A. Cockerell, 31 

 Poor (Charles Lane), the Solar System, 629 

 Pope (Prof. W. J., I'.R.S.), Optical .Activity of Compounds 



having Simple Molecular Structure, 22 ; Relation between 



the Crystalline Form and the Chemical Constitution of 



the Picryl Derivatives, 213 

 Porcher (Ch.), Examination of Pus for Indol, 312 

 Porter (.Annie), Lciicocvtozooii inuscitli, sp. n., a Parasitic 



Prolozoon from the Blood of White Mice, 261 

 Porter (Prof. A. W.), Osmotic Pressure of Compressible 



Solutions, 92 

 Porter (Dr.), Latitude Variation, 255 

 Potassium, on the Radio-activity of, and Other Alkali 



Metals, Prof. J. C. McLennan, 29; Norman R. Camp- 



bell, 55 

 Potential, das mechanische, naclt Vorlesungen, von L. 



Boltzmann bearbeitet, und die Theorie der F'igur der Erde, 



zur Einfiihrung in die hohere Geodiisie, Dr. H. Buch- 



holtz, 364 

 PotoniiS (Prof. H.), the Origin of Coal, 86 

 Potter (Prof. M. C), Bacteria as Agents in the Oxidation 



of Amorphous Carbon, 45 

 Poulsen (Mr.), Experiments in High-speed Wireless 



Telegraphy, 484 

 Poulton (Prof. E. B.), Mimicry in Lepidoptera, 649 

 Power (F. B.), Constituents of Olive Leaves, 93 ; Con- 

 stituents of Olive Bark, 93 

 Pozzi-Escot (Em.), Method for the Volumetric Estimation 



of Tartaric Acid in Argol and Cream of Tartar, 95 

 Prague Exhibition, the, 437 

 Praise of a Simple Life, 29 

 Price (T. S.), Preparation of Diselenides, 119; Action of 



Alkalis on Sodium Alkyl Thiosulphates, 239 

 Priestley (J. H.), Experiments near Worcester on the 



Effect of a High-tension Electrical Discharge over a 



Growing Crop, 652 

 Prior (G. T.), Chemical Composition of Seligmannite, 287 

 Pritzel (Dr. E.), Plant Formations in Mid and Southern 



Greece, 515 

 Probability : la Loi des petits Nombres, Charles Henry, 



147 

 Procter (Prof. H. R.), Leather Industries Laboratory Book 



of Analytical and Experimental Methods, 602 

 Production : Kraft, ()konomische, technische und kultur- 



geschichtliche Studien iiber die Machtenfaltung der 



Staaten, Prof. E. Reyer, 660 

 Prominence, a Large, Mr. Evershed, 377 

 Prominences and Coronal Structure, Albert Alfred Buss, 



151; Dr. William J. S. Lockyer, 174; Philip Fox, 318 

 Prominences at the Sun's Poles, Father Fenyi, 435 

 Protozoa : Classification of the Spirochetes, Messrs. 



Krzysztalowicz and Sicdlecki, 63 ; Leucocyiozoon 



musculi, sp. n., a Parasitic Protozoon from the Blood 



of White Mice, .Annie Porter, 261 

 Psychology : Visual Illusion and Fixation, Dr. James 



Eraser, 138 ; the Animal Mind, a Text-book of Com- 

 parative Psychology, Dr. Margaret Floy Washburn, 



William Brown, 269 ; the Senses of Insects, Auguste 



Forel, Dr. C. Gordon Hewitt, 506 

 Puiseux (P.), la Terre et la Lune, Forme ext^rieure et 



Structure interne, 291 ; the History of Lunar Relief, 306 

 Punnett (Mr.), the Determination of Sex, 647 

 Purvis (J. E.), Absorption Spectra of the Hydrocarbons 



isolated from the Products of the Action of Aluminium 



Chloride in Naphthalene, 191 

 Pycraft (W. P.), Nest of the Ringed Plover, 63 ; a Book 



of Birds, 330 

 Pyman (F. L.), .Aromatic .Arsonic and Arsinic Acids, 190 



Queensland, the Discovery and Settlement of Port Mackay, 



~ H. Ling Roth, 507 



Qu^nisset (M.), the Albedoes of Jupiter's First and Third 



Satellites, 255; a Bolide with a Persistent Tail, 612 

 Quinet (P.), the Formation of Compounds in Solutions of 



Tartaric Acid and Sodium Molybdate, 312 



Radial Velocities of Ninety-nine Stars, Prof. Kiistner and 



Dr. Zurhellen, 232 

 Radiography : the Nature of X-rays, Dr. Charles G. 



Barkla, 7 ; Action of the X-rays on the Evolution of the 



