TF Se 
Nature, 
October 7, 1915. 

Nova Scotia, Goldfields of, W. Malcolm, 125 
Nucleic Acids, Prof. W. Jones, 116 
Objective Psychology, Pure and Applied, 142 
“Objectives, Thin, Calculation of, T. Smith, 472 
Occultation of 8 Scorpii by Jupiter (1876), V. Ventosa, 684 
(Edema: in Frogs, Functional, M. Back, K. M. Cogan, 
A. E. Towers, 25; and Nephritis, Prof. M. H. Fischer, 
Second Edition, 258 
CEnothera: a Method of obtaining Complete Germination 
of Seeds in, Prof. B. M. Davis, 553; and Mutation, 668 ; 
the Significance of Sterility in, Prof. B. M. Davis, 443 
GEnotheras from Cheshire and Lancashire, Dr. R. R. 
Gates, 154 
Ohio University, Extensions to Buildings of, 304 
Oil Tank-ship, Evolution of the, H. Barringer, 404 
Oil-well Engineering, W. Calder, 331 
Oils, Resins, and Paints, a Manual of, vol. i., Analysis and 
Valuation, Dr. H. Ingle and J. A. L. Sutcliffe, 202 
Okapi: Life-habits of the, Dr. C. Christy; Sir H. H. 
Johnston, 713; Supposed Horn-sheaths of an, Sir E. 
Ray Lankester, 64; Dr. C. Christy, 342; the, Dr. C. 
Christy, 506 
Olfactory : Sense of Insects, the, Dr. N. E. McIndoo, 399; 
Structures in Insects, 399 
One-Million Map, the Royal Geographical Society’s Work 
on the, 594 
Opium in the Bible, Prof. P. Haupt, 444 
Opium Poppy, on the Trail of the, Sir A. Hosie, 90 
Opossum, Early Figures of the, Dr. C. R. Eastman, 89 
Optical: Glass and Instruments, the Supply of, 348; the 
Supply of, 266; Lord Southwark, Dr. R. M. Walmsley, 
603; Instrument, an, Dr. J. A. Fleming, 194; Labora- 
tory and, Glasses, British Science Guild Reports on 
Supply of, 14 
Optic Projection Principles, Prof. S. H. Gage and Dr. 
He Pa iGage; 61 
Orbicular Granite of Mullaghderg, Prof. G. A. J. Cole, 26 
Orbitoids of Trinity Island, H. Douvillé, 693 
Ordovician Eurypterid, a New, E. W. Shuler, 461 
Organic: Chemical Industry, the Position of the, Prof. 
W. H. Perkin, 128; Matter of the Sea Bottom, P. B. 
Jensen, 526 
Organism, the, as a Thermodynamic Mechanism, Dr. J. 
Johnstone, 240 
Origin: of “4686” Series, T. R. Merton, 249; of Single 
Characters as Observed in Fossil and Living Animals, 
Prof. H. F. Osborn, 550 
Orion Nebula, Kadial Velocities in the, Dr. E. B. Frost, 
445 
Ornithological Notes, 78, 188 
Ornithorhynchus, Egg of, Profs. Wilson and Hill, 653 
Oscillation of the Indene Double Linkage, Ch. Courtot, 
251 
Osiris Prize of the Institute of France, awarded to Profs. 
Widal and Chantemesse and Dr. Vincent, 401 
Osmotic: Balance of Skeletal Muscle, Miss D. J. Lloyd, 
25; Pressure: and the Properties of Solutions, 466; of 
Aqueous Solutions, H. N. Morse, 466; of the Ions and 
of the Undissociated Molecules of Salts in Aqueous 
Solution, S. J. Bates, 553 
Osmotics: a Neglected Correction in, Earl of Berkeley, 34; 
Earl of Berkeley, 317 
Ovulation, Simultaneous, 
Curtis, 626 
Oxford University: Bequest to Exeter College by Capt. 
C. F. Balleine, 692; Financial Position of, 53; Prince 
B. Galitzin appointed Halley Lecturer for 1916, 527; 
Gift by C. W. D. Perrins for Equipment of the New 
Chemical Laboratory, 527; Lectures and Informal In- 
struction on Anthropology, 471; Museum, Report of, 
387; Observatory, the Fortieth Annual Report of the, 
601; Herbert Spencer Lecturer, 1915-16, 248; School 
of Geography, Lectures and Practical Instruction, 471 ; 
Report of the Professor of Pathology, 388 
Oxydases and their Inhibitors, W. R. G. Atkins, 244 
Oxygen in the Atmosphere, Proportion of, A. Leduc, 
417 
and Double-yolked Eggs, R. 
Lndex 

XXXVIl 

Oyster Shells, Evidences of Age afforded by the Growth- 
rings of, Miss A. L. Massy, 299 
Ozarkian Seaweeds and Oolites, G. R. Wieland, 354 
Paintings of Old Masters, Dr. M. Toch, 45 
Paints and Painting, the Chemistry of, Sir A. H. Church, 
fourth edition, 259 
Palemons of the Philippines, the, 
69 
Palasolithic Man in South Africa, F. W. Fitzsimons, 615; 
Prof. A. Keith, 616; Dr. L. Péringuey, 569 
Palzontographical Society, Annual Meeting, 122 
Paleontological Notes from Hazara, H. C. Das-Gupta, 307, 
Dr. R. P. Cowles, 
529 
Palzontology, Recent Work in, 354 
Palzornis, Osteology of, Dr. R. W. Shufeldt, 552 
Paleozoic Arachnida of North America, A. Pentrunkevitch, 
355 
Paleocene Deposits of the San Juan Basin, W. J. Sinclair 
and W. Granger, 356 
Panama: Canal, the Country, and the People, A. Bullard 
(A. Edwards), 5° Geological Survey of, 136 
Papain, Preparation and Digestive Properties of, D. S. 
Pratt, 601 
Papaya Fruit-fly, F. Knab and W. W. Yothers, 332 
Papers set in the Qualifying Examination for the Mechanical 
Sciences Tripos, 1906-1913, 558 
Papyrus, Applicability of, to Paper Manufacture, Dr. W. 
Beam, 548 
Para Rubber Trees in the Singapore Botanic Gardens, 
I. H. Burkill, 681 
Parabolic Orbits of Meteor Streams, C. P. Olivier, 553 
Paradoxurine Viverrids, External Characters of the, R. I. 
Pocock, 472 
Paraftin-wax, Plates of, J. T. Cunningham, 167 
Parallaxes of Four Visual Binaries, F. Slocum, 405 
Paralytics, the Electrical Examination of, J. Cluzet, 552 
Parasitic Worms collected on the British Antarctic (Terra 
Nova) Expedition, Drs. R. T. Leiper and E. L. 
Atkinson, 303 
Parasitism in Seeds, V. Galippe, 693 
Paris Geographical Society, Medal awarded to Dr. J. Scott 
Keltie, 212 5 
Parka decipiens, Fleming, G. Hickling, and W. R. Don, 363 
Pasteur : and After Pasteur, S. Paget, 228; and Preventive 
Medicine, Prof. R. T. Hewlett, 228 $ 
Patagonia, the Deseado Formation of, Prof. F. B. Loomis, 
21 
Beahosy’ College for Teachers, Gift to the, 692; Museum, 
Report of, 96 
Pearl Fishery in Palk Bay, the Recent, J. Hornell, 529 
Peat : Bogs and Peat Industry of Canada, A. v. Anrep, 600; 
Reclamation of, 491; Lignite, and Coal, B. F. Haanel, 
658; Tar, Utilisation of, Prof. G. T. Morgan and G. E. 
Scharff, 416, 518 ; ‘ ; 
Pellagra, Infectious Nature of, G. Tizzoni, 167 
Peloria, the Condition known as, 491 
Penguinery, Re-visited, the, 345 
Pennaia Trilobite, S. J. Shand, 355 : 
Pennsylvania: University of, Bequest to, by S. Dickson, 
581; University Museum, Gift to Building Fund, 
248 
Pecicns Granted for the Year ended March 31, 1915, 459 
Pentastomids, New, Mary L. Hett, 111 
Perception, Physics, and Reality, C. D. Broad, 172 
Periodic Motion, Similitude in, Prof. H. Chatley, 288 
Peripatid in the Eastern Himalaya, Discovery of a, 
S. Kemp, 304 
Peripatus, Distribution of, A. H. Clark, 215 
Periscope Mirrors, Use of Celluloid in, E. M. Langley, 
to} 
Be canes, S. D. Chalmers, 68 : 
Permian Labyrinthodont Skulls in the American Museum, 
R. Broom, 355 b 
Permo-Trias of South Africa, New Reptiles and Amphibians, 
S. H. Haughton, 44 
Perturbations of the Magnetic Declination at Lyons, Ph. 
Flajolet, 279 
