XXXIl 
Planets: Densities, Dr. S. Brodetsky, 33; 
Planetary Surface Features, E. Belot, 
beyond Neptune, H. E. Lau, 437 
Plankton of Clare Island District, G. P. Farren, 446 
Plant-autographs : Royal Institution Discourse, Prof. J. C. 
Bose, 546 
Plants: Irish Folk Lore, N. Colgan, 168; Pflanzen- 
physiologie, R. Kolkwitz, 212; Genera of British 
Plants: with Characters, H. G. Carter, 237; Story of 
Plant Life in British Isles, A. R. Horwood, 237; Plants 
collected by Mr. and Mrs. Talbot in South Nigeria, 
Dr. A. B. Rendle, 237; Plant Physiology, Dr. L. Jost, 
R. J. H. Gibson, 237; Plant Life, T. H. Russell, Aerrf 
Pfianzenmikrochemie, Dr. O. Tunmann, 372;  Irrit- 
ability of Plants, Prof. J. C. Bose, 372; Plants and 
their Uses, F. L. Sargent, 372 ; Ecology, Dr. O. Drude, 
425; Accessory Factors in Plant Growth, Prof. W. B. 
Bottomley, 445; Chlorophy!l, R. Willstitter and A. 
Stoll, 451; Biochemie, Prof. F. Czapek, 451; Influence 
of Electric Current on Nutrition, M. Chouchak, 473; 
Physiological Plant Anatomy, Prof. G. Haberlandt, M. 
Drummond, 477; Transpiration, Sir F. Darwin, 4923 
Arsenic and Manganese in Food Plants, F. Jadin and 
A. Astruc, 603; Plant Poisons in S. Africa, Dr. Juritz, 
624 
Plants, Diseases of : International Conference at Rome, 90; 
International Convention, 167; Diseases of Plants, 226; 
Damping-off, J. Johnson, 249; British Rust Fungi, 
W. B. Grove, 264; Mildews, Rusts, and Smuts, G. 
Massee, Ivy Massee, 264; Fungi which cause Plant 
Disease, 264 
Plasma, Variations in Growth of Mammalian Tissue in, 
A. J. Walton, 127 
Plumage: Importation of Birds’ Plumage, 41; Plumage 
Bill, Lieut.-Col. J. Manners-Smith; Sir H. H. John- 
ston, 350; Nepal Birds, C. W. Beebe, 462 ; Brochure 
by J. Buckland, 485; Plumage Bill, 532, 543; Destruc- 
tion of Wild Peafowl in India, Sir H. H. Johnston, 559 
Pneumonia among Natives on the Rand, G. D. Maynard, 
275 
Poems of Human Progress, etc., J. H. West, 374 
Pole, North: Rasmussen Expedition, 433; Stars around the 
North Pole, Dr. F. W. Dyson, 574, s99 
Porpoise Caught at Dungeness, 484 
Port Erin: Annual Report, 196, 221; Easter Work, 227 
Positive Rays: Very Soft Réntgen-rays produced by Impact 
of Positive and Kathode Rays, Sir J. J. Thomson, 523 
Potash and Magnesia, Estimation, M. Duboux, 30 
Potato Diseases due to Phytophthora, Dr. G. H. 
bridge, 226 
Potential : Double Distributions in Potential Theory, J. G. 
Leathem, 314; Potential of Ellipsoids and Figures of 
Equilibrium of Rotating Liquids, J. H. Jeans, 522 
Poultry Laying, 221 
Power, Application to Road Transport, 
265 
Practical: Practical Mathematics, T. S. Usherwood and 
Caen Aa acimbles sor 504; N. W. M’Lachlan, 2; Prac- 
tical Education, J. Wilson, 146; J. G. Legge, 633 
Origin of 
69; Planet 
Pethy- 
H. E. Wimperis, 
Precious Metals, Sampling and Assay of, E. A. Smith, 157 
Prehistoric Times, Rt. Hon. Lord Avebury, Rev. J. 
Griffith, 57; Prehistoric Trade of England and France, 
O. G. S. Crawford, 169 
Pressure : Instrument for recording Pressure Variations due 
to Explosions in Tubes, J. D. Morgan, 231; Phase 
Changes due to High Pressures, P. W. Bridgman, 493 
Prickly Pear Pest, Remedies, 276 ; 
Primary Education and Beyond, Prof. R. A. Gregory, 173 
Primula sinensis, Genetics in, R. P. Gregory, 259 
Princeton Colloquium on Mathematics, G. A. Bliss and E. 
Kasner, 528 
Principles of Economics, Prof. H. R. Seager, 632 
Prism: Dispersion of Light Pulse by a Prism, Dr. R. A. 
Houstoun, 76; Prism Material for Spectrographs, Dr. 
J. S. Plaskett, 65 
Prize Awards: Acton Sentennial, 141; Solvay, for Physical 
Chemistry and Psychology, 300 , ; 
Prizes Offered : by International Geological Congress, 
for Petrography, 141; by Berlin Academy (Auwers 
Jubilee), 247; by Royal Academy of Belgium, 485; 
Riberi, Sool., for Medical Research, 589 i 
47l., 
L[ndex 
[ Nature, 
October t, 1914 
Probability, Prof. Borel, 662 
Prohibition of Experiments on Dogs, Sir E. A. Schafer, 
242 
pronaan, Weight of, J. Timmermans, 103 
Proper Newe Booke of Cokereye, Catherine F. Frere, 53 
Proportion, Theory of, Prof. M. J. M. Hill, 662 
Protista, Nutritive Conditions of Soil, H. G. Thornton and 
G. Smith, 313 
Protoplasm, Synthetic Power, Prof. E. T. Reichert, 491 
Prussian Meteorological Institute, G. Hellmann, 276, 374 
Psychology : a “Sixth Sense,” 118; Commercial Advertising 
Experiments, E. K. Strong, 196; Human Behaviour : 
a First Book for Teachers, Prof. S. S. Colvin and 
Prof. W. C. Bagley, C. Burt, 424; Inductive versus 
Deductive Methods of Teaching, W. H. Winch, C. 
Burt, 424; Minds in Distress, Dr. A. E. Bridger, 
C. Burt, 424; Phenomena of the Conscious and Uncon- 
scious, Abdul Majid, 428; Joint Meeting of Societies : 
Repression in Forgetting, 513 
Public Health Report for 1912-13, 18 
Pueblos, 537 
Pyrometers, Recording, 303 
Pyrometric Method, G. Millochau, 551 
Quantum Theory: Recent Extensions, A. Eucken, 203) 
New Tests and Determination of h, Prof. R. A. 
Millikan, 493; Rayleigh’s Law of Extinction, Prof. 
L. V. King, 557; Quantum Theory, J. H. Jeans, 593 
Quebec Bridge, 569 
Radial Velocities of Stars, 416 
Radiation: Radiation of Gas Molecules excited by Light, 
Prof. R. W. Wood, 43; Doppler Effect and Carnot’s 
Principle, Prof. H. L. Callendar, 59; die Theorie der 
Strahlung und der Quanten, A. Eucken, 263; Radia- 
tion due to Oxidation of Phosphorus, A. Blanc, 369; 
Radiation of the Sun, Prof. C. G. Abbott, 464; Ray- 
leigh’s Law of Extinction, Prof. King, 557; Report on 
Radiation and Quantum Theory, J. H. Jeans, 593 _ 
Radio-activity : Tables, 67; Passage of a Particles through 
Photographic Films; 367; 8 and y Rays and Struc- 
ture of the Atom, Dr. A. van den Broek, 376; Radio- 
activity and Atomic Numbers, Dr. A. van den Broek, 
480; Atomic Weight of Lead of Radio-active Origin, 
Maurice Curie, 421; T. W. Richards and M. E. 
Lembert, 603 ; Electrochemical Properties of Radium-B 
and Thorium-B, Z. Klemensiewicz, 472 ; Thorium Lead 
an Unstable Product, R. W. Lawson, 479 
Radio-elements : Chemistry of the Radio-elements : Part ii., 
Periodic Law, F. Soddy, 1; Lead and Final Product of 
Thorium, Dr. A. Holmes, 109 
Radiology : Local Application of Radium in Therapeutics, 
Prof. J. Joly, 181; Société Belge Papers, 436; Highly 
Radio-active Solutions, Prof. W. Duane, 493 
Radio-telegraphic Commission, 327, 490 
Radio-telegraphy, see Wireless 
Radium: Radium and Quack Medicine, 225; Action of 
Radium Rays on Bakelite, C. E. S. Phillips, 295; 
Radium Institute Report, 413; Reduction of Carbon 
Monoxide in presence of Radium Emanation, O. 
Scheuer, 463; Determining Radium, Thorium, and 
Actinium in Materials, Dr. C. Ramsauer, 487; Springs 
of Evaux-les-Bains, M. Cluzet and T. Nogier, 525; 
Radium Emanation in the Atmosphere, J. R. Wright 
and O. F. Smith, 569; Action on Wireless Crystal 
Detectors, M. Chaspoul, 657 
Railroad Surveying, Text-book on, 
C. C. Wiley, 239 
Railways: Bachelet Levitated, 273 ; Railways of the World, 
E. Protheroe, 501; Timber for Railway Sleepers, 545 
Rain: a Cuban Rain Record, A. H. Brown, 341 ; Thunder- 
storm over London on June 14, W. Marriott, 402; 411; 
J. Fairgrieve, 454; Chemical Composition of Rain, Dr. 
G. W. Pickels and 
Turitz, 463; Rainfall of Southern Pennines, B. C. 
Wallis, 472; Rainfall and Wind Direction, H. J. 
Bartlett. 472; Estimation of Rainfall by Growth of 
Trees, Prof. A. E. Douglass, 539, 617; Visibility as a 
Sign of Rain, 592 
Rare Earths, Constant Presence of, in Scheelite shown by 
Cathodic Phosphorescence, C. de Rohden, 630 
