XXXll 



Index 



14 1900 



Channel and Atlantic Liners, 21 ; Motive Power, Steam 

 Turbines, High Speed Navigation, 424 



Parsons (Frances Theodora), How to know the Ferns, 412 



Passing of the Empires, the, G. Maspero, 361 



Pathology, Death of Dr. Birch-Hirschfeld, 134 



Paul (K. M.), Death of, 397 



Paulli(Dr. S.)» Pneumaticity of Olfactory Regions of Mammalian 

 Skull, 354 



Paulsen (M.), Photographs of Aurora Spectrum, 621 



Paving-stones, Artificial, in Germany, 14 



Peach (B. N., F.R.S.), the Silurian Rocks of Britain, Vol, i. 

 Scotland, 25 



Peachey (S. J.), Asymmetric Optically Active Nitrogen Com- 

 pounds, 94, 96 ; Attempts to Resolve into Active Con- 

 stituents Compounds containing Asymmetric Sulphur Atoms, 

 373 ; Methylethylthetine Dextrocamphorsulphonate and 

 Dextro-a-bromo-camphorsulphonate, 405 ; Uextromethyl- 

 ethyl-w propyl Tin Iodide, 434 



Peake (R. E.), Atlantic Deep-sea Soundings, 286 



Pearson (H, J,), Beyond Petsora Eastward : Two Summer 

 Voyages to Novaya Zemlya and the Islands of Barents Sea, 



Pearson (Karl), Mathematical Contributions to Theory of Evo- 

 lution, 505 

 Peddie (Dr, W.), Thermo-electric Properties of Mercury, 286; 

 the Torsional Constants of Iron and Steel, 359 ; Law of 

 Elastic Fatigue, 482 

 Peirce (Prof. B. O.), Specific Heat of Marble, 367 

 Pelabon (H.), Chemical EquiUbrium of a Four-gas System, 



459 ; Action of Hydrogen on Antimony Sulphide, 580 

 Pellat (H.), Stratifications, 383 

 Penfield (S. L.), New Minerals from Franklin (New Jersey, 



U,S.A.) Zinc Mines, 93 ; Graftonite, 310 

 Pentavalent Nitrogen, Stereo-chemistry of, Edgar Wedekind, 



199 

 Peopling of Australia, the, John Mathew, Prof. Alfred C. 



Haddon, F.R.S., 193 

 Pepper (Prof.), Death and Obituary Notice of, 545 

 Percival (A. S. ), Optics, a Manual for Students, 149 

 Perfumes, Chemistry of, Dr. W. H. Warren, 619 

 Periodic Changes ot Solar Activity, the Relation between the, 



and the Earth's Motion, Dr. J. Halm, 445 

 Peripatus in the Malay Peninsula, Dr. R. Horst, 31 

 Peripatus from New Zealand, a New, Prof. Arthur Dendy, 444 

 Perkin (Dr. F. Mollwo), Advancement of Electrical Chemistry, 



428 

 Perkin (W. H., sen.), Rotatory Powers of Aromatic Hydro- 

 carbons, 264 

 Perkin (W. H., jun.), Brasilin and Hsematoxylin, III., 264; 

 Action of Alcoholic Potash on Monobromoglutonic Ester, 

 264 ; Ethyl Pentanehexacarboxylate, 405 

 Perman (E. P.), Vapour-density of Bromine at High Tempera- 

 tures, 285 

 Pernter (Dr. J. M.), Hail-prevention by Gun-firing, 451 

 Perst (A.), Mass of Cubic Decimetre of Water, 71 ; New Source 

 of Light for Spectrometry of Precision, 407 ; Constitution of 

 Yellow Sodium Rays, 483 

 Perreau (M.), Influence of Rontgen Rays on Electrical Resist- 

 ance of Selenium, 167 

 Perrine (Prof. C. D.), Refraction Effect of Comet Swift, 87 

 Perrotin (M.), the Giacobini Comet, 47 



Perry (Prof. John, F.R.S.), the Steam Engine and Gas and Oil 

 Engines, 100 ; Bust of Sir George Stokes, 102 ; Valve 

 Motions of Engines, 152; to Calculate a Simple Table of 

 Logarithms, 415 ; Atmospheric Electricity and Disease, 471 ; 

 Electricity in War, 541 ; Practical Mathematics, Prof. A. G. 

 Greenhill, F.R.S., 582 

 Perspective Interference Curves depending on Perspective, A. 



Mallock, 29 

 Perth Observatory, Position of, W. E. Cooke, 114 

 Perturbations of Venus, Secular, Prof. Eric Doolittle, 41 

 Pertz (D. F. M.), Experiments on Periodic Movement of Plants, 



359 

 Pestana (Dr. Camara), Death of, 84 

 Peters (Dr. Carl), the Situation of Ophir, 203 

 Peters (H.), lodonium Compounds, 506 

 Petroleum in Algeria, M. Neuburgher, 618 

 Petroleum, Animal Origin of, 63 



Petrology : Origin of Granite, C. E. Stromeyer, 358 ; Lord 

 Kelvin on the Origin of Granite, A. R. Hunt, 391, 589 



Petrovsky (A. A. ), Measurement of Capacity in Heterogeneous 

 Medium, 335 



Petsora Eastward, Beyond, Two Summer Voyages to Novaya 

 Zemlya and the Islands of Barents Sea, H. J. Pearson, 348 



Pettersson (Prof. Otto), Stockholm International Conference oa 

 the Exploration of the Sea, 413 



Pflanzen, Das Geschlect der, R. J. Camerarius, 293 



Pflaum (H.), a Vacuum Electroscope, 554 



Pharmacy : an Introduction to the Study of Materia Medica, 

 Henry G. Greenish, 174; Obituary Notice of Dr. Henri 

 Beauregard, 593 ; Death and Obituary Notice of Gustave 

 Planchon, 618 



Phillips (C. E. S.), Surface Tension Experiment, 481 



Philosophic Naturelle, La, Dr. W. Nicati, 199 



Philosophy of Atomic Theories, the, 26 



Phisalix (C.), New Pathogenic Microbe in Rabbit, 580 



Phonographic Record, the Acoustic Analysis of the Vowels; 

 from the. Prof. Louis Bevier, 467 



Phosphorescence. Loss by Heat of, Gustave le Bon, 579 



Photography : Dark Lightning Flashes, Dr. W. Ainslie Hollis, 

 7 ; Dr. W. J. S. Lockyer, 7 ; on the Cause of Dark Light- 

 ning and the Clayden Effect, Prof. R. W. Wood, 104 ; a 

 Photograph of Clouds, Lieut. -General Tennant, 14; Szcze- 

 panik's Process of Preparing Textile Designs, Prof. R. Beau- 

 mont, 14 ; Long Focus Photographic Telescope, 41 ; a Fault 

 in Lippmann's Photography, P. Wiener, 93 ; British Journa) 

 Photographic Almanac for 1900, 175 ; Photography of 

 Current Curves, J. Zenneck, 262 ; Apparatus for Instanta- 

 neous Photography producing Maximum Effect, G. Sigriste, 

 287 ; a New Photographic Photometer, Dr. J. Hartmann, 

 306 ; Transformation of Negative Image into Lamellar State, 

 and Colour Phenomena therefrom, A. Frillat, 335 ; the 

 Effects of Lightning upon Electric Lamps, Sydney Webb, 

 343 ; Sir G. G. Stokes, Bart., F.R.S., 343, 413 ; Prof. R. W. 

 Wood, 391 ; Reduction of Star Photographs, A. R. Hinks, 

 355 ; Die Photographic der Gestirne, Dr. J. Scheiner, 363 ; 

 Photographs of Stars, Star Clusters and Nebulae, together with 

 Records of Results obtained in the Pursuit of Celestial 

 Photography, Dr. Isaac Roberts, F.R.S., Dr. William J. S. 

 Lockyer, 533 ; Recent Progress in Photography, 416 ; Meteof 

 Photography, 424 ; Photographs of Sound-waves, Prof. R. W. 

 Wood, 433 ; Photography of Live Fish, Douglas English, 

 451 ; the Zeiss Photo-micrographic and Projection Apparatus, 

 Dr. J. W. Measures, 506 ; Theorie und Geschichte des Photo- 

 graphischen Objectives, Moritz von Rohr, 511 



Photometry : Proposed New Harvard Photometry, 208 ; a New 

 Photographic Photometer, Dr. J. Hartmann, 306 ; Die Photo- | 

 metric der Gestirne, Dr. G. MiiUer, 509 ; New System of ; 

 Spectrum Photometry, Prof. D. B. Brace, 521 | 



Photometric Observations of Mercury during Solar Eclipses, ! 

 Dr. G. MiiUer, 574 



Physical Atlas, the, J. G. Bartholomew and A. J. Herbertson, 

 171 



Physical Geography of Jamaica, the Geology and, Robert T. 

 Hill, 237 



Physical Geography, Prof. W. M. Davis, assisted hy W. H. 

 Snyder, 266 



Physics : Geschichte der Physikalischen Experimenterkunst, 1 

 Dr. E. Gerland and Dr. F. Traumiiller, 4 ; Physical Society, , 

 23, 70, 118, 164, 334, 382, 457,481, 529; Equilibrium of : 

 Vessel Carrying Liquids, M. Appell, 24 ; Elements of Physics, j 

 Henry Crew, Prof. Arthur Schuster, F.R.S., 27 ; Interfer- i 

 ence Curves Depending on Perspective, A. Mallock, 29 ; - 

 Large Nicol Prisms, C. D. Ahrens, 31; Water Boiled by ^ 

 Cold, R. W. Quick, 60 ; Variations in Viscosity Coefficient ; 

 of Water near 4° C., Dr. G. Pacher, 61 ; the Distillation ofi 

 Metals, C. Kahlbaum, 65; Periodic Changes in Rate ofj 

 Reaction, Prof. Ostwald, 65 ; the Silver Thread Phenomenon 1 

 in Giggleswick Well, Dr. Broadbent, 70; Decrease inj 

 Tension of Solution Vapours at 0°, Dr. A. Smits, 72 ; Note,' 

 on Distances to which Explosions are Felt and Heard, Dr. ^ 

 Charles Davison, 91 ; Explosions in Air, W. Wolff, 93 ;| 

 Wiedemann's Annalen, now Annalen der Physik, 93, 190, ; 

 262, 432, 554, 626 ; the Rise and Development of the Lique-i 

 faction of Gases, Willett L. Hardin, 98; la Liquefaction desj 

 Gaz et ses Applications, Prof. Julien Lefevre, 98 ; Lique- j 

 faction of a Gas by Self-cooling, G. S. Newth, 627 ; thci 

 Resistance of the Air, 248; Prof. G. H. Bryan, F.R.S., 107, | 

 248; Researches on Kerr's Phenomenon, MM. Abraham! 

 and Lemoine, 112; the Elastic Properties of Rocks, P- 



