Nature, /iiiie 7, iJ 



INDEX 



XXV 



Plarr (Gustave), Elementos de Calculo de los Cuatemiones, 

 &c., Valentin Balbin, 145 



Plateau (Felix), Researches on the Sense ot Vision in the 

 Anthropods, 118, 308, 525 



Platinum Batteries, Improvements in, 354 



Platinum under Electric Currents, Cause of Emission of Solid 

 Particles by, Dr. A. Berliner, 378 



Platinum, the Existence of, in the Solar Atmosphere, 358 



Pleiades, New Nebulae discovered . in the, by means of Photo- 

 graphy, 551 



Pleospora, Signer A. N. Berlese on the Genus of Fungi, 500 



Plesiosaurus, Discovery of Bones of the, at Pitchery Creek, 

 Central Queensland, 65 



Poetsch's (M.) Method, Mine-Shaft successfully sunk in Belgium 

 by, 208 



Poison, Arrow, Analysis of Somali, Amaud, 575 



Poison, Native Method of obtaining, from the Strophanthus, 



"3 

 Polar Bear, Tame, 301 

 Polar Bodies, Prof. A. Weismann's Theory of, G. Herbert 



Fowler, 134 

 Polarization of the Sky, Effect of Snow on the, James C. 



McConnel, 177 

 Pole, Probable Temperature of, Jules Girard, 91 

 Polianite, on the Crystalline Form of, E. S. Dana and S. L. 



Penfield, 500 

 Politics and the Presidency of the Royal Society, Prof. Balfour 



Stewart, F.R.S , 76 ; Prof. Alex. W. Williamson, F.R.S., 



76; W. T. Thiselton Dyer, F.R.S., 103 

 Pollen, Resistance of, to External Influences, 494 

 Polynesians, on the, their Origin, Migrations, &c., MM, Lesson 



and Martinet, 164 

 Population of the Earth, 24 



Portman (Maurice), Explorations of the Andaman Islands, 330 

 Post-Glacial Insects, Alfred Bell, 232 

 Potanin's Observations on the Mobility of Loess, 89 

 Potanin's (M.) Journeys in East Tibet and East Gobi, 141; 



Pension to, 567 

 Potassa in Plants, on the State of the, MM. Berthelot and 



Andre, 71 

 Potassium, Determination in Wave-lengths of the Two Red 



Rays of, H. Deslandres, 504 

 Potsdam, Proposed Magnetic Observatory at, 88 

 Potts (Edward), American Forms of Fresh-water Sponges, 



209 

 Poulton(E. B.): Colour-Susceptibility of Silkworms, 95; True 



Teeth in the Young Ornithorhynchus paradoxus, 383 

 Practical Education, Chas. G. Leland, 562 

 Preece (W. H., F.R.S.), Coefficient of Self-induction of Iron 



and Copper Telegraph Wire, 303 

 Prehistoric Animals, Discovery of Bones of, in the Harz Moun- 

 tains, 329 

 Prehistoric Remains Committee, 91 

 Prehistoric Times, the Baltic Amber Coast in. Dr. A. Lissauer, 



Arthur J. fJ vans, 531 

 Pressure of Mixtures of Gases and Vapours, and on Dalton's 



Law, Prof. G. Gugliemo and V. Musina, 47 

 Preston (S. Tolver), on some Apparent Contradictions at the 



Foundations of Knowledge, 221 

 Prestwich (Prof. Joseph, F. R.S.): Greenland Glaciers, 200; 



Eocene Strata in the Tertiary Basins of England, Belgium, 



and North of France, 287 ; Retirement of Prof. Prestwich 



from the Chair of Geology at Oxford, 397 ; on Geology — 



Chemical, Physical, and Stratigraphical, 482 

 Princeton College and President F, L. Patton, 421 

 "Principia," Newton's, Prof. A. Stoletow, 273 

 Pringsheim (Dr.), Specific Heat of Gases, 216 

 Prodromus of the Zoology of Victoria, Prof. F. McCoy, 533 

 Prolegomena to the Statistics of Thought, A. Bastian, 387 

 Prost (Eug.), on the Colloidal Sulphuret of Cadmium, 23 

 Pryer (Henry), Death and Obituary Notice of, 567 

 Przewalski (General), Results of his Fourth Journey to Central 



Asia, 38 

 Psychology, Experimental, 113 

 Psychology, M. Ribot, College de France, 442 

 Pterodactyl Skull, Fossil, found in the Yorkshire Lias, 59S 

 Puiseux (I'.) and M. Loewy, on Equatorial cotidi lyxi^ Equa- 



torials in general, 504, 527 

 Pulkowa Observatory, 400 

 Pulverizing Minerals for Analysis, Mill for, 65 



Pygmy Race from Central Africa, the Akkas, a. Prof. W. H, 



Flower, F.R.S., 395 

 Pyrenees, Peaks of the, 493 

 Pyroxene, Crystals of, 47 



Quantitative Analysis for Students, Course of, W. N. Hartley, 



F.R.S., 271 

 Quantitative Chemical Analysis, Exercises in, W. Dittmar, 174 

 Quarterly Journal of Microscopical Science, 22, 572 

 Quaternions : Balbin's, Gustave Plarr, 145 ; Prof. W. Steadman 



Aldis, 535 

 Quinone, Carboxy-derivatives of, Dr. J. U. Nef, 551 



Rabbits, Australian, and M, Pasteur, 421 



Rabies : Persistence of Virus in Dead Bodies of, V. Galtier, 



360 ; Experiments on Inoculation against, 624 ; among Deer, 



440 

 Rack-Railway at Langres, France, 328 

 Radcliffe, Oxford, Observatory, 91 

 Radiation, New Instrument for the Measurement of, C. C, 



Hutchins, 358 

 Radiograph, on the, by Louis Olivier, 528 

 Rae (Dr. J., F.R.S.), is Hail so Formed? 344 

 Raft, Logs of Abandoned, 492 

 Railway : Gore's, Prof. Oliver J. Lodge, F.R.S., 128; Rack, 



at Langres, France, 328 

 Rain, Falling, Theory of the Outflow o£ Air under, H. Allen, 



18 

 Rainbow, an Unusual, H. M. Andrew, 464 

 Rainfall on and around Table Mountain, J. G. Gamble, 143 ; 



of Ceylon, 187 ; of Spain, Dr. Hellmann, 312 ; of the 



American Plains, 328 ; Measure of, in Dutch East Indies, 



351 ; of Paris, M. Renon, 542 

 Ramsay (Prof. W.), Cause of Colour- Blindness, 65 

 Rameswaram Island, the Fish-Fauna of, Edgar Thurston, 380 

 Range of Molecular Force, the. Prof. A. W. Riicker, F.R.S., 



405 

 Ranidse, Classification of the, by G. A. Boulenger, 526 

 Rankine (A.), the Thermal Windrose at the Ben Nevis Ob- 

 servatory, 518 

 "Raphides," on the Significance of those Excreta of Plants 



known as, Herr Stahl, 209 

 Rats, the Chewing Movements in. Prof. Gad, 576 

 Rawitz(Dr.) : Mucous Cells in Invertebrates, 168 ; on the Eyes 



of Mussels, 480 

 Rayleigh (Lord, F.R.S.), on the Relative Densities of Hydrogen 



and Oxygen, 418 

 Reade (T. Mellard) : Theories of the Origin of Coral Reefs and 



Islands, 54 ; Coral Formations, 488, 535 ; a Mechanical 



Cause of the Lamination of Sandstone not hitherto noticed, 



222 ; an Estimate of Post-Glacial Time, 478 ; Toeing and 



Heeling at Golf, 31 

 Reale Istituto Lombardo, 572 

 Reason, a Treatise on the Principle of Sufficient, Mrs. P. T. 



Fitzgerald, 30 

 Reason and Language, Dr. St. George Mivart, F.R.S., 364, 



462 

 Reason = Language, Prof. F. Max Miiller, 412 

 Recalescence of Iron, H. Tomlinson, 165 

 Reciprocal Influence of Organs of Sense, Experiments on the, 



Herr Urbanschitsch, 157 

 Reciprocants, Theory of. Prof. J. J. Sylvester, F.R.S., 71^ 

 Reclus (M. Elisee), Contributions to the Sociology^; of the 



Australians, 163 

 Red After-Glow observed in the Vicinity of Stockholm, 399 

 Red Deer, Horns of the, found in the Duddon Estuary, 543 

 Redruth, Proposed Museum of Mineralogy at, 299 

 Redwood (Boverton) and Alfred Gordon Salamon, Institute of 



Chemistry, 393 

 Refraction Double Dielectric, R. Blondlot, 360 

 Reichenhall, Archaeological Explorations near, 1 12 

 Reid (W. G.), Solution of Carbonate of Lime in Sea- Water, 



4795 

 Relations, the, between Geology and the Biological Science?, 



Prof. John W. Judd, F.R.S., 424 

 Reliktenseen, Prof. R. Credner, 496 

 Remnants or Vestiges of Amphibian and Reptilian Structures 



found in the Skulls of Birds, W. K, Parker, F.R.S., 501 



