Nature, Dec. 2, 1886] 
INDEX 
XXV 
EE 
Phytophthora infestans, Germination of Spores of, 537 
Pickering (Prof. E. C.), Draper Memorial Photographs of 
Stellar a exhibiting Bright Lines, 439, 569 
Pidgeon (D.), Lunar Rainbow, 469 
Piliganine, M. Adrian, 163 
Pillar, Sun, and Solar Halo seen on June 5, 1886, F. A. 
Bellamy, 193 
Pines, North American, J. N. Rose and J. M. Coulter, 560 
Pisciculture, Sienemiscion of Whitefish to the Isle of Mull, 276 
Place (Prof.), Electricity and Refractory Horses, 554 
Plane Curves, Constructive Geometry of, T. H. Eagles, M.A., 
Blonets : the Influence of Phase on the Brightness of Minor, Dr. 
G. Miiller, 16 ; New Minor, 225, 579; New Minor Planet 
discovered by Dr. Luther, yo; Cometary and Planetary 
Orbits, Chevalier Théodore d’Oppolzer, 310; Planetary 
Perturbations, T. Tisserand, 463 
Plants : and their Defences, 5 ; E. Huth, 122; MM. Berthelot 
and André, on the Formation of Oxalic Acid in Plants, 47 ; 
Paintings of Plants and their Homes at Kew, by Marianne 
North, Catalogue of, by W. B. Hemsley, A.L.S., 143 ; Hand- 
book of Plant Dissection, J. C. Arthur, Chas. R. Barnes, and 
John M. Coulter, 261; Physiology of Plants, Lectures on 
the, S. H. Vines; 381; Plants, Past History of Existing, 
Ww. Carruthers, F.R.S., 451; Modification of Plants by 
Climate, Mr. Crozier, 530; Plants and Drugs, New Com- 
mercial, T. Christy, 335 
Player (J. H.), on an Accurate and Rapid Method of Esti- 
mating the Silica in an Igneous Rock, 513 
Pleiades, Heliometric Observations of the, 531; Dr. 
502 
Pleistocene Animals, Evidence of Man and, in North Wales, 
prior to Glacial Deposits, Henry Hicks, F.R.S., 216 
Pleistocene Succession of the Trent Basin, K. M. Deeley, F.G.S., 
Elkin, 
139 
Pliocene Sandstones from Montana and Idaho, G. P. Merrill, 
539 
Pliocene Deposits of North-Western Europe, Arch. Geikie, 
F.R.S., Clement Reid, 341 
Pogson (N. R.), Madras Magnetical Observations, 3 ; Report of 
Observatory Work in Madras, 131 
Pohl Pincus (Dr.), on the Polarisation Colours ‘of the Human 
Hair, 47 
Poison of the Stinging-Nettle, A. W. Bennett, 53 
Polar Meteorological Station, Mouth of Lena, M. Eigner, Dr. 
R. Lenz, 604 
Polar Regions, Depth of Permanently Frozen Snow in, 485 
Polarising Prism, C. D. Ahrens, 162 
Pollinisation in the Orchid Family, on the Effects of, M. Léon 
Guignard, 308 
Poloni (Dr. G.), Permanent Magnetism of Steel at Various 
Temperatures, 159 
Polyclinians, M. Lahille, 492 
Polynesia, East and West, Comparison of the Dialects ot, Rev. 
Geo. Pratt, 355 
Polynomes, Conjugated, F. Deruyts, 562 
Pond, on Volcanic Dust in New Zealand, 488 
Porion and Dehérain (MM.), Wheat Culture in North-Western 
France, 588 
Portland Cement, Influence of Magnesia on, M. G. Lechartier, 
140 
Potassium Chlorate, Effect of Heat in Changing the Structure 
of Crystals of, H. G. Madan, 66 
Potato, Origin of our, 7 ; Tercentenary Exhibition of the, 601 
Potsdam Astro-physical Observatory, 176 
Poulton (E. B.), Larvee of Pygera bucephala and Smerinthus 
ocellatus, 306 ; Acquisition of Unpleasant Taste as a Means 
of Protecting Insects, 537; on the Artificial Production of a 
Gilded Appearance in Chrysalises, 538 ; Habits of Testacella, 
618 
Powell (Major), Earthquakes in the United States, 470 
Power in Laboratories, David P. Todd, 121 
Practical Histology and Pathology, Heneage Gibbs, M.D., 
E. Klein, 51 
Pratt (Rev. George), Comparison of the Dialects of East and 
West Polynesia, 355 
Pre-glacial Man in North Wales, Dr. Hicks, F.R.S., 608 
Prehistoric Man in Manitoba, C. N. Bell, 610 
Prehistoric Palace of the Kings of Tiryns, Dr. H. Schliemann 
and Dr. W. Dorpfeld, 218 
Priestley’s Experiment repeated with Aquatic Animals and 
Plants, M. E. Gréhant, 404 
Pringsheim (Dr.), on a New Application of the Telephone for 
the Measurement of Electrical Resistance, 308 
Pritchard (Rev. Prof., F.R.S.), Researches in Stellar Photo- 
graphy, 305 
Proceedings of the Linnean Society of New South Wales, 589 
Proceedings of the Royal Geographical Society, 226, 372, 604 
Proceedings of the Royal Society of Queensland, 581 
Proceedings of the Royal Society of Tasmania, 581 
Proceedings of the Windsor and Eton Scientific Society, 155 
Progress of Chemistry and Mineralogy, 400 
Propylamines, on the Normal, M. C. Vincent, 308 
Protection for Insects, Unpleasant Taste as a Means of, E. B- 
Poulton, 537 
Protective Imitation, 3 
Protective Influence of Black Colour from Light and Heat, 2 
Prussia, Decline in the Number of Students in Philology, 
Philosophy, and History in, 347 
Pryer, on Natives of British North Borneo, 556 
Pseudo-Algze, Our Fossil, Prof. W. C. Williamson, F.R.S., 
369 
Pseudomorphs of Limonite after Pyrite (E. G. Smith), 158 
Pulkowa Observatory, Work at, 579 
Pumice on the Cornish Coast, H. B. Guppy, 29 
Punjab, Coal in the, 224 
Putiatin (Prince) and the Russian Archeological Society, 434 
Putnam’s (F, W.) Report of the Explorations in Ohio, 397 
Pygaera bucephala and Smerinthus ocellatus, Larve of, E. B- 
Poulton, 306 
Pyridic Bases, M. A. Ladenburg, 636 
Pyrite, Limonite after, Pseudomorphs of, E. G. Smith, 158 
Pyro-electric and Optical Observations on Brazilian Topaz, 354 
Pyro-electricity of Crystals, A. Kundt and E. Blasius, 354 
Pyro-electricity of Tourmaline, E. Riecke, 354 
Pyrotechnical Questions, Dissociation Temperatures with Refer- 
ence to, F. Siemens, 64 
Quadruped Duck, Rev. Edward Geoghegan, 314 
Quantitative Analysis, Fresenius’s, 2 
Quantitative Analysis of Dry Extract of Wines, E. Bouilhon, 
516 
Quarterly Journal of Microscopical Science, 67, 132 
Queensland, Royal Society, 581 
Quelch (John), Peripatus in Demerara, 288 
Quincke (Prof. G.), Dielectric Fluids under Electric Forces, 
462 
Races of Man, Egyptian Classification of, R. S. Poole, 139 
Radde (Herr), in the Transcaspian Region, 41 
Radloff (Prof.), on Comanic and Cognate Dike 155 
Railway Mileage of United States, 554. 
Railway Weather-Signals, Chas. Harding, 361 
Rain, Black, S. J. Perry, 143 
Rain-Band, a Plea for the, J. Rand Capron, 382 
Rainbow, Lunar, D. Pidgeon, 469 
Raineri (S.), Submarine Telegraphy, 628 “iy 
Rainfall of the Cape Colony, T. Stewart, 573 
Rainfalls, Annual, Areas of Different, J. Murray, 461 
Ramie, or China Grass, Cultivation of, at Lausanne, Prof- 
Schnetzler, 530 
Ramsay (A.), What is Histioderma?, 76 
Ramsay (W., Ph.D.) and Sydney Young, D.Sc., a Study of 
the Thermal Properties of Ethyl Oxide, 94; Thermo: 
Dynamical Relations, 138 
Rance (C. E, De) and W. Topley, Erosion fof Coasts of Eng- 
land and Wales, 481 
Raoult (F. M.), Solidification of Thymol and Naphthaline, 163 
Kkaschig on Gold Chloride, 464. 
Raske (Dr.), Brain of Embryos of Horned Cattle, Dr. Kossel, 
164 
Raven, Sagacious, in the Colonial and Indian Exhibition, 225, 
60. 
Rayleigh (Right Hon. Lord, F.R.S.), Colours of Thin Plates, 
62 
462 
Read (C. H.), Ethnological Exhibits in the Colonial and Indian 
Exhibition, 186 
Reade (T. M.), Origin of Mountain Ranges, 602 
Real Atomic Heat, Prof. A. Sandrucci, 159 
