Index 



r Nature, 

 {.April |, 1919 



e, Attachment Organs of Some Common, Mrs. 

 L. Porter, 279 



Pa teur : Institute, Paris, Resignation of the Directorship 

 of the, ' Prof. E. Roux : Dr. A. Calmette appointed 

 Director, 330; the Play, Production of, 449 



Patent Law Amendment, 405 



Patents: Suggested Extension of the Life of, 4158; The 

 Crucial Question of, Sir R. Hadfield, 493 



•' Borer, Biology of the, Harukawa and Yagi, 

 291 



Peking and Shanghai, Medical Universities for, 436 



Penguins, The Slaughter of, 270 



P< rception, Some Judgments of, Dr. G. E. Moore, 219 



Perkin Medal of the American Chemical Society, The, 

 awarded to Dr. F. G. Cottrell, 409 



Perlidlae and the Destruction of Orchard Foliage, E. J. 

 Newcomer, 50 



Permearheter the, of F. P. Fahy, Tssts of, 113 



Pernio carboniferous Fenestellida?, Notes on Some, with 

 Description of New Species, C. Laseron, 19 



Persian Oilfields, Geology of the, H. G. Busk and H. T. 

 Mayo, 234 



Petrol and Petroleum: 361; Spirits, A Description of their 

 Sources, Preparation, Examination, and Uses, (."apt. 

 W. E. Guttentag, 361 



Petroleum : Boring for, near Chesterfield, 149 ; Refining, A 

 Campbell, 361 : Technologists, Institution of, Sir A. 

 Strahan and Eng. Yire-Adml. G. G. Goodwin elected 

 Honorary Members of the, 429 



Pheasants : A Monograph of the, W. Beebe. Vol. i., 302 ; 

 A Natural History of, 302 



Philippine Islands : Fringing Reefs of the, Prof. W. M. 

 Davis, 80; Mineral Resources of the, 1916, 112; The 

 Flora of the, E. D. Merrill, 451 



Philosophy : and Science, Relations between, Prof. T. M. 

 Forsvth, 134; ns Monadologv, Prof. H. Wildon Carr, 

 49S 



Phosphorescence, Types of, E. L. Nichols and H. L. 

 Howes, 399 



Phosphorescent Light, Law of Decay of, Prof. E. L. 

 Nichols and H. L. Howes, 271 



Photosynthesis, Dynamical Aspects of, Prof. W. J. V. 

 Osterhout and" A. R. C. Haas, 79 



Phreatoicus, A Fossil Species of. Prof. C. Chilton, 30 



Phthisis, The Epidemiology of, Prof. R. T. Hewlett, 368 



Physical : and Chemical Constants, 47 ; and Chemical Data 

 of Nitrogen Compounds, 2,7 ; and Chemical Research 

 for Japan, An Institute of, 294 ; Relativity, The Es- 

 sence of, Sir J. [.armor, 400 



Physics : Ancient and Modern, 422 ; Fundamental, The 

 New Science of the. Dr. W, W. Strong, 422 ; in Rela- 

 tion to National Life, Sir R. Glazebrook, 135 ; in 

 Schools, The Teaching of. Sir O. Lodge and others, 

 •509; Synthetic and Analytic, Dr. H. S. Allen, 241; 

 Teacher, Goads for the; Dr. H. S. Allen, 262 



Physique GeneYale, Cours de, H. Ollivier, Tome Troisieme, 

 241 



Pig, Black-. Apparition of a, in Ireland, Miss E. Hall, 312 



Pitchblende Ore in Devon, 427 



Piura-Tumbes Region of Northern Peru, Social Conditions 

 of the. Dr. P. A. Means, 352 



Plagionite-like Mineral from Dumfriesshire, A, Drs. 

 G. F. H. Smith and G. T. Prior, 23S 



Planet of the Trojan Group, The Fifth,' Prof. Wolf, 233 



Planets, Minor, Observations of, Gonnessiat and Sv, 104 



Plant: Physiology, Prof. V. I. Palladin. Authorised Eng- 

 lish edition. Edited by Prof. B. E. Livingston, 121: 

 Products and Chemical Fertilisers, S. H. Collins, 4! 



Planting in Maritime Localities, -,82 



Plants : Climbing, Stems of. Dr. J. Shirley and C. A. Lam- 

 bert, 519; Diseases of, 401; Etiolated, Distribution of 

 the Mineral Elements and the Nitrogen in, G. Andre, 

 j6o; Immunity of, with regard to the Immediate Prin- 

 cioles which they Elaborate, 19; The Exploitation of, 

 Various Writers. Edited by Prof. Oliver, 225; the 

 Growth of. Chemical Correlation in, 281; 

 lling Mill, The, at Coatesville. Penn.,' 471 



Platinum, Substitutes for, Dr. Ch.-Ed. Guillaume, 64 



Point. dit r- Lamp, The New, S. S. Richardson, | 



Poisson's and Laplace's Equations. Two dimensional Solu- 

 tions of, I.. Bairstow and \. Berry, 317 



I"' '1. 11 ■ 1 opic Effect 



Keeley, 352 

 Polyembryony in 



Gatenby, 112 

 Porphyroxinc, Isolation of, .1. X. Rakshlt, 20 

 Portsmouth Municipal College, W. H. Watson 



Pi "dm 1 d by Certain I >i. ns 



the Parasitic Hymi 1 



.!• B. 



Vice-Principal and Head of the Chemistry and Ni 



Science Department of the, 378 

 Potash, Spain a Producer of, 131 

 Potassium Chloroplatinate, A Method of Rapid Reduction 



ol, M. Horsch, 460 

 Potato Plant, Anatomy of the, E. F. Artschwager, 213 

 Power Stations, Typical Instruments for Use in, 431 

 Prehistoric Remains in tin- Tenby Museum, A. L. Leach, 



5™ 



Prentice Pillars and the Architect and his Pupil, Dr. W. 

 Crooke, 331 



Preventive Medicine, Scientific Research and, 347 



" Pritzel," The Revision of, 44S 



Prize Awards of the Paris Academy of Sciences for 191S, 

 3 2 4 



Pseudo-fatness, A New Disease of the Larva of Lymantria 

 dispur, A. Paillot, 479 



Psychological Principles, Dr. J. Ward, 344 



Psychology: and Practical Life, Lt.-Col. C. S. Myers, 477; 

 one of the Natural Sciences?, Is, Prof. H. Wildon Carr, 

 344 ; The War and, T. H. Pear, 88 



Pteridologiques, Notes, Prince R. Bonaparte, 34 



Pteromalus deplanatus, Nees, Swarms of, 50 



Public : Health, The, 294; School Science Masters, Associa- 

 tion of, Annual General Meeting of the, 375 



Quartz : Mercury-vapour Lamps, Measurements of the 

 Radiation of, Coblentz, Long, and Kahler, 451 : 

 -pebble Beds in the Carboniferous Limestone of Caldon 

 Low-, Staffs., J. W. Jackson, 198 



Quebec Bridge, Testing of the, 73 



Queensland : Geology of the Lower Mesozoic Rocks of, 

 Dr. A. B. Walkom, 139; Tropical, 243 



Ouinoa Grain, 332 



Rabbit Disease, The "New," Dr. R. T. Leipcr, 239 



Radcliffe : Foundations, The, 224 ; Dr. John, A Sketch of 

 his Life, with an Account of his Fellows and Founda- 

 tions, Dr. J. B. Nias, 224 



Radio: -active and other Minerals associated with Fossil 

 Wood from the Beaufort Series: Tantalite Crystals 

 from Namaqualand, A. R. E. Walker, 430: Change, 

 The Conception of the Chemical Element as Enlarged 

 by the Study of. Prof. F. Soddy. 3^6; Material, N, It- 

 Luminous, Brightness of, W. C. Clinton, 330; Sub- 

 stances Emitting a-Rays, The Aggregate Recoil of,' 

 R. W. Lawson, 404; -telegraphic Measurements, New 

 Method of Using Contact Detectors in, L. W. Austin, 

 533; -metallography, Thorne Baker, 201 



Rainbow: A Curious, W. P. H.-S., 83; Brightness, C. T. 

 Whitmell, 125 



Rainfall : Aggregate London, September, October, Novem- 

 ber, 289; British, 0117, Dr. H. R. Mill and C. Salter, 

 583; Diminution of. with Elevation above Ground, C. 

 Salter, | ;.. ; in 1918, Dr. H. R. Mill, 4 ',1 1 



Raleigh : Sir Walter, a Pioneer of Evolution, 102 ; Ter- 

 centenary, The, 176 



Ramsay : Sir William, as a Scientist and Man, Prof. T. C. 

 Chaudhuri, 64; Memorial Fund, The Princi "I Wales 

 to be Patron of the, 111 



Range : -finder, Possible Disturbance of a, by Atmospheric 

 Refraction due to the Motion of the Ship which Car- 

 ries it, Lord Rayleigh, 517; -finders, British and Ger- 

 man, 412 



Rat Pest, The, C. B. Moffat ; M. A. C. Hinton, 176 



Rats, The Invasion of Trenches by. Prof. P. Chavigny, s.3 



Rav Tracing. The Vectorial Method of, Offer by Dr. L. 

 Silberstein, 404 



Rays through Any Optical System of Lenses, Prisms, and 

 Mirrors, Simplified Method of Tracing, Dr. L. Silber- 

 stein, 361 



Reading, University College, Resignation of Dr. M. C. 

 Rayner of the Lectureship in Botany at, 37S 



