Nature, June II, 1SS5] 



Nudibranchs, Dr. Bergh on, 165 

 Nuremberg Cosmographic Society, the, 65 

 Nuovo Giornale Botanico Italianico, 70 



Obi, Signor Sommier's Voyage down the, 323 



Observatories: Lick Observatory, California, 18, 180; Proposed 

 Subterranean Observatory in Japan, 63; Washburn Obser- 

 vatory, Wisconsin, 137 ; Dearborn Observatory, Chicago, 251 ; 

 Naval Observatory, Washington, 251, 442 ; Melbourne Ob- 

 servatory, 419 



Observatories, Ornithological, 90 



Occultation of Aldebaran on February 22, 181, 322 ; on March 21, 

 442; on May 15, 612; Ancient Occultations of Aldebaran, 



539 



Occultation, Ancient, of Jupiter, 370 



O'Connor (Capt. Edwardo), Official Report on his Recent Ex- 

 ploration of the Upper Simay (Rio Negre) and Lake Nahuel- 



Hualpi, 351 

 Odell (W. ), Report of the Commissioner of Education in the 



U.S. for the Year 1882-83, 435 ; Aims and Methods of the 



Teaching of Physics, 578 

 CEcophondse of New Zealand, E. Meyrick, 22 

 Ohio, Ancient Monument of, Prof. F. W. Putman, 42 

 " Ohm's Fringes," on the Interference-Curves known as, H. G. 



Madan, 83 

 Oil-well in Pennsylvania, Extraordinary Effect of Explosion of 



Nitro-Glycerine in, 108 

 Olearia Traill ii, Kirk, 23 



Oliver (Prof. Daniel, F.R.S.), Awarded Royal Medal, 62. 

 Olscn (J.), Norwegian Flora. 63 

 Omond (R. T. ), on the Formation of Snow Crystals from 



Fog on Ben Nevis, 532 

 Onchidia, the, Dr. Bergh, 165 

 Ophir, Scandinavian Land of, 303 



Optic Nerve, Central Origin of the, Dr. von Monakow, 404 

 Optical Glass, Charles Feil and the Manufacture of, 347 

 Optical Phenomenon, Singular, 128 

 Optical Work, a Method of Isolating Blue Rays for, H. G. 



Madan, 263 

 Optics : Dr. Uhthoff's Experiments on Visual Acuteness, 476 ; 



Dr. Konig's Measurements of Colour, Sense, and Visual 



Acuteness of Zulus, 476 

 Organic Spectra, New, 326 



Organisms, Micro-, and Disease, Dr. E. Klein, F. R. S., 2 

 Ord (Dr. William M.), Erosion of Glass, 360 

 Ore Deposits, Treatise on, J. Arthur Phillips, F.R.S., 405 

 O'Reilly Jos. (P.) Catalogue of Earthquakes, 351 ; Abnormal 



Season in the Niger Delta, 578 

 Oribatidoe, New British, A. D. Michael, 617 

 Orion-Nebula, Variable Star in the, 18 

 Orkney, Forest-Trees in, James dime, 434 

 Ornithological Observatories, 90 



Ossification, Illustrations of the Laws of, Prof. Busch, 547 

 Over-Pressure in Elementary Schools, Dr. J. H. Gladstone. 



F.R.S., 73, 149 

 Ovules, Petalody of the, and other Changes in a Double- 

 Flowered Form of Dianclla ctzrulea, Dr. Maxwell T. Mas- 

 ters, 487 

 Oxford Medical Teaching, Physiological Laboratory and, 414 

 Oxford University Museum, Additions to, 180 

 Oxford, Vivisection Discussion at, 440, 453 

 Oxfordshire, G. C. Druce's Flora of, 611 

 Oxus, the Fish of the, 252 

 Oyster-Beds on Sleswick Coast, 90 

 Oyster Fishery in the U.S., 515 

 Ozone and Cholera, 1S7 



Pabst Cell, the, 203 



Paladini (L.), on the Foundation of European Colonies in 

 Africa, 613 



Palaeography of the Philippine Islands, Herr F. Muller, 538 



Palestine, Further Notes on the Geology of, with a Considera- 

 tion of the Jordan Valley Scheme, W. H. Hudleston, 

 F.R.S., 614 



Palinurus lalandii, Prof. T. J. Parker, 23 



Pampas, Barrenness of the, Edwin Clark, 263, 339 ; Arthur 

 Nicols, 289 



Pancreas Extract, New Base in, Dr. Kossel, 389 



Paradise Fish, the, 109 



Parana River, New Cataracts on the, 66] 



Parfitt (Edward), Recent Earthquakes, 339 



Paris: Academy of Sciences, 24,47, 7 2 > 95. "9> '641 lS 7. 211, 

 236, 259, 283, 307, 331, 355, 379, 393. 403. 428, 45i. 475. 

 500, 524, 547, 572, 595, 618 ; Opening of the Paris Central 

 School, 40 ; Paris Pneumatic Postal Service, 90, 107 ; the 

 Proposed Iron Tower, Exhibition of Paris, 1889, 108 ; Paris 

 Centennial Exhibition, the Site for, 157 ; Paris Biological 

 Society, 180 ; Paris University Students' Association, 226 ; 

 Paris Geographical Society, 228, 300,371,469; Electrical 

 Lighting of Private Houses in Paris, 298 ; Proposed Experi- 

 ments for Re-determining the Velocity of Light at Paris Obser- 

 vatory, 441 ; Electrical Exhibition at Paris Observatory, 491 ; 

 Museum of Ethnography, Paris, 541 ; Photography from 

 Captive Balloon in Paris, 564 ; Paris Central School of Arts 

 and Manufactures, 584; Project for Making a Seaport of 

 Paris, 586 



Parker (J. Spear), Action of Very Minute Particles on Light, 

 481 



Parker (Prof. T. J.), Palinurus lataniii, 23 



Parker (W. Kitchen, F. R.S.), Mammalian Descent, Hunterian 

 Lectures for 1884, Dr. Geo. J. Romanes, F.R.S., 358; the 

 Skull in the Insectivora, 377 



Parkes Museum, 135, 349 ; Mansion House Meeting in Aid of, 

 368 



Parks, Geographical, Prof. Escriche on, 614 



Parnell (Col. Arthur), on Lightning Conductors, 80 



Particles, Very Minute, Action of, on Light, J. Spear Parker, 



4 81 • o 



Patagonia (Southern), Steinmann s Journeys in, 2S1 



Patents, Recent Engineering, Sir Frederick J. Bramwell, 



F.R.S., 420 



Paterson (W. G. Spence), the New Volcanic Island off Iceland, 



37 



Paul (John D.), Peculiar Ice-Forms, 264 



Peabody Museum at New Haven, U.S., 510 



Peach (Ben. N.) and J. Home, Report on the Geology of the 

 North- West of Sutherland, 31 ; Ancient Air-Breathers, 295 



Pearl Fisheries of Tahiti, 545 



Pearson (Karl), Terminology of the Mathematical Theory of 

 Elasticity, 456 



Penck (Dr.), the Old Glaciers of the Pyrenees, 157 



Pennsylvania, Supposed Glacial Action in, Lewis, 41 ; Ex- 

 traordinary Effect of Explosion of Nitro Glycerine in Oil- 

 Weil, 108 



Pentacrinoid Stage of Anledon rosaceus, Dr. W. B. Carpenter, 

 F.R.S., 27 



Peoples, Mode of Reckoning Time amongst various, 217 



Per-Centiles, Anthropometric, Francis Galton, K.R. S., 223 



Perkin (W. II., F.R.S.), Recent Progress in Chemistry, 568 



Perthshire Society of Natural History, 63 



Pescadores, the, Geography of, 540 ; Geology of the, H. B. 

 Guppy, 553 



Petalody of the Ovules and other Changes in a Double-Flowered 

 Form of Dianella rarulea, Dr. Maxwell T. Masters, 487 



Petermann's Mittheilungen, 281, 300 



Petrography, Scope and Method of, J. J. H. Teale, 444 



Phanerogams and Ferns, Vegetative Organs of the, A. De Bary, 



2'3 



Phenomena, Astronomical, for the Week, 265, 301, 323, 351, 



370, 396, 420, 443, 468, 493, 515, 540, 565, 589, 612 

 Phenomena of Nature, How Thought Presents itself among the, 



Duke of Argyll, 433 

 Phenomenon, Singular Optical, 128 



Philadelphia Academy of Science, Bureau of Scientific Informa- 

 tion in connection with, 40 

 Philippine Archipelago, Marche's Exploration; in, 137 

 Philippine Islands, Pa'seography of, Herr F. Muller, 538 

 Phillips (G. Melville), " Tn the Lena Delta," &c, 287 

 Phillips (John, F.R.S.), "Manual of Geology," A. H. Green, 



334 . „ 



Phillips (J. Arthur, F.R.S.), "Treatise on Ore Deposits," 405 

 Phosphorus (Perchloride of), Accident from Heating, 277 

 Photographing a Tornado, Prof. Edward S. Holden, 106 

 Photographs by Amateurs, Exhibition of, 41S 

 Photography from Captive Balloons in Paris, 564 

 Photography, Astronomical.Telescopes for, A. Amslie Common, 



38, 270 

 Photometer, a Paraffin, J. Joly, 330 

 Physical Arithmetic, A. Macfarlane, 551 



