Nature, ] 
October 24, 1912 
Index 
XXXI1 
Photomechanical Processes, Use of an Emulsion of Aqueous 
Solution of Gelatine and Gum Arabic in, Dr. Hans 
Strecker, 227 
Photometric Equipment of Holophane Co., 41 
Photosynthesis and Stomatal Aperture, W. Lawrence Balls, 
555 
Phototelegraphy, see Telegraphy 
Physical Apparatus: Viscometer, Simple, for very Viscous 
Liquids, Dr. G. F. C. Searle, 312; Expansion Apparatus 
for making visible Tracks of Ionising Particles in Gases, 
C. T. R. Wilson, 415 
Physical Laboratories: Extension of Physical and Electro- 
technical Laboratories in the University of Manchester, 
46; Jefferson Physical Laboratory, 324; see also National 
Physical Laboratory 
Physics : 
Books: Jelinek’s Psychrometer-Tafeln : Anhang: Hygro- 
meter-Tafeln von J. M. Pernter, 5; a Laboratory 
Note-book of Physics, S. A. McDowall, 317; Grundriss 
der Naturlehre, E. Mach, Dr. K. Habart, 343; Intro- 
ductory Course for Technical Students, W. M. Hooton 
and A. Mathias, 343 ; the Ontario High School Physics, 
Dr. F. W. Merchant and Prof. C. A. Chant, 343; the 
Ontario High School Laboratory Manual in Physics, 
Dr. F. W. Merchant and C. A. Chant, 343; Lehrbuch 
der Physik, Prof. H. Ebert, 343; an Intermediate 
Course of Practical Physics, Rajanikanta De, 343; 
Anniversary Lectures at Clark University, V. Volterra 
and others, 528; Laboratory Problems in Physics, 
F. T. Jones and Prof. R. R. Tatnall, 603; Teaching 
of Physics for Purposes of General Education, Prof. 
C. Riborg Mann, 630; 
Papers: Vapour Pressure of the Alkaline Metals between 
250° C. and 400° C., L. Hackspill, 157; Experimental 
Researches on the Density of Liquids below o° C., 
Dr. Jean Timmermans, 157; Variations of the Pressure 
Coefficient with Temperature and on some Points 
which depend on it in the study of Internal Pressure 
of Fluids, E. H. Amagat, 183; the Different Internal 
Energies of a Substance, R. D. Kleeman, 208, 313; 
Observed Variations in the Temperature Coefficients of 
a Precision Balance, J. J. Manley, 233; Energy 
Content of Material Bodies, Prof. Natanson, 250; a 
Theory of Matter, Prof. Mie, 485; Experiments with 
Rotating Films, C. V. Boys, 493; Viscosity of Gases 
at Low Temperatures, 540; Effects of Friction in a 
Vacuum on Thorium Oxide, R. Howlett, 606; Sign 
* of the Newtonian Potential, H. Piaggio, 608; sce also 
Liquids 
Physiography of the Prairies and N.E. Australia, 567; 
Physiography and Ecology of Mt. Arrowsmith District, 
N.Z., Messrs. Speight, Cockayne, and Laing, 644 
Physiology : Composition of Blood Gases during Respira- 
tion of Oxygen, G. A. Buckmaster and J. A. Gardner, 
24; Sir John Burdon-Sanderson: a Memoir by the late 
Lady Burdon-Sanderson, 55; Physiology, Prof. W. D. 
Halliburton, 166; the Instability of a Cortical Point, 
T. Graham Brown and Prof. C. S. Sherrington, 258; 
the Process of Excitation in Nerve and Muscle : Croonian 
Lecture, Dr. K. Lucas, 390; Relation between Secretory 
and Capillary Pressure, Leonard Hill and M. Flack, 442; 
Importance of Substances present in Minute Amounts in 
Food, Prof. Ben. Moore, F.R.S., 567; Boron in Animal 
Tissues, G. Bertrand and H. Agulhon, 574; Physiology 
of the Semicircular Canals and their Relation to Sea- 
sickness, Dr. J. Byrne, 575 
Physiology : Plant: Identification of Glucoside from Leaves 
of Kalmia latifolia with Asebotine, 25; Distribution of 
Oxydases in the Plant and their Réle in Formation of 
Pigment, Dr. F. Keeble and Dr. E. F. Armstrong, 258; 
Plant Physiology: with special reference to Plant Pro- 
duction, Prof. B. M. Duggar, 265; Pflanzenphysiologie, 
Prof. W. Palladin, 371; Influence of sudden Temperature 
Changes on Respiration, L. Blanc, 495 
Phytogeography: Pflanzengeographische Wandlungen der 
deutschen Landschaft, Prof. H. WHausrath, 421; die 
Pflanzenwelt Dalmatiens, Prof. L. Adamovié, 421; 
Einfthrung in die Tropenwelt, Dr. K. Guenther, ‘421 
Pinhole Images, R. Beattie, 295 
Plague in India, Dr. Greenwood, Dr. Rowland, 177 
Planet 1911 MT, Dr. Palisa, 356; Messrs. Haynes and 
Pitman, Prof. Franz, 384; 512 
Plankton to South of Isle of Man, Prof. 
Mr. Scott, 645; see also Biology, Marine 
Plant-breeding, Prof. J. M. Coulter, 510 
Plants, Higher, Method for Culture in Sterile Media, R. 
Combes, 157 
Platinum: Method of 
G. Berlemont, 313 
Poetry and Science, Dr. T. H. Warren, 73 
Herdman and 
Joining Platinum and Quartz, 
Poisons: Immunity of Lizard to Poison of Helederma 
suspectum, Mme. Phisalix, 365; Poisonous Plants in 
S. Africa, Mr. Burtt-Davy, 455; Toxicity of Fungi, 
M. Radais and A. Sartory, 547; Mechanism of Hamo- 
lysis caused by Arachnolysin, R. Lévy, 574; Toxic 
Properties of B-imidoazoethylamine,. A. Berthelot and 
D. M. Bertrand, 625 
Polaris, Variability, J. Stebbins, 669 
Polarisation in Light from a Cloudy Sky, Detection of 
small amounts of, A. E. Oxley, 313, 669 
Politics and Science, 426 
Polycheta from the Pacific Coast, Miss Helen L. M. 
Pixell, 416 
Polyplacophora of Lord Howe and Norfolk Islands, C. 
Hedley and A. F. B. Hull, 600 
Polypodium, New, from Panama, R. Mason, 14 
Pontoon, a Ferro-concrete Sludge-pumping, for the Man- 
chester Ship Canal, 407 
Post Mortems and Morbid Anatomy, Dr. T. Shennan, 477 
Potential: Sign of the Newtonian Potential, H. Piaggio, 
608 
Poultry : Principles and Practice of Poultry Culture, J. H. 
Robinson, 240; Conference of International Association 
of Poultry Instructors, 537 
Prairie Wolf and Antarctic Dog, Dr. R. F. Scharff, 632 
Prairies, B. Shimek, 567 
Primula obconica under Cultivation, A. W. Hill, 145 
Protozoology : Lehrbuch der Protozoenkunde, Prof. Doflein, 
372 
Daviess Acid, Free, in Living Tissues of Plants, Dr. Peche, 
Ponelogy’ Text-book of Experimental Psychology with 
Laboratory Exercises, Dr. C. S. Myers, 316; Introduc- 
tion to the Study of the Senses, J. A. Dell, 476; 
Increasing Human Efficiency in Business, Prof. W. D. 
Scott, 629; the Beyond that is Within, and Other 
Addresses, Prof. E. Boutroux, 630 
Pygmies of New Guinea, R. W. Williamson, A. F. R. 
Wollaston, 556 
Pyknometer, New Form, 355 
Pyrometry : a Practical Treatise, C. R. Darling, 28 
Quartz-mercury Lamp, Variations in Radiation of, A. Tian, 
547 Weds : 
Quaternions, International Association for Promoting Study 
of, 588 
Rabbit Traps, 416 
Radiation: Advances in the Theory of Radiation: Nobel 
Lecture at Stockholm, Prof. W. Wien, 146; Meteoro- 
logical Conditions affecting Nocturnal Radiation, J. R. 
Sutton, 287; Radiations producing the Photosynthesis of 
Complex Compounds, &c., D. Berthelot and H. 
Gaudechon, 573 : 
Radio-activity : New Laboratory, J. Danne, 69 ; Correction, 
63; Electrolytic Transportation of the Active Deposit of 
Actinium through Water, Prof. T. Godlewski, 86; 
Nature of y Rays excited by B Rays, J. A. Gray, 104; 
the Radio-active Uraniferous Niobotantalotitanates of the 
Madagascar Pegmatites, A. Lacroix, 235; the 6 Particles 
reflected by Sheets of Matter of different Thicknesses, 
W. Wilson, 285; Deceleration of B-rays when traversing 
Matter, J. Danysz, 390; Radio-activity of Mineral Waters 
of Usson, G. Massol, 625; Radio-active Deposits in 
Australia, 642; Mobilities of the Radio-active Atom-ions 
in Gases, S. Ratner, 677 
‘Radio-chemistry : Chemistry of 
Soddy, F.R.S., 291 
Radio-telegraphy, see Wireless 
the Radio-elements, F. 
