XXXVI L[ndex 
Nature, 
June 13, 1907 
upon the Metabolism and Sources of Energy in Plants, 
Dr. W. Pfeffer, 49; Plant Response as a Means of 
Physiological Investigation, Prof. Jagadis Chunder Bose, 
Dr. F. F. Blackman, F.R:S., 313; Vorschule der 
Pflanzenphysiologie, cine experimentelle Einfthrung in 
das Leben der Pfianzen, Prof. L. Linsbauer and Dr. 
K. Linsbauer, 602 
Plants: Guide to the Principal Families of Flowering 
Plants, J. Adams, 29; Jugendform und Bliitenreife im 
Pflanzenreich, Dr. L. Diels, 194; Plant Dispersal and 
Kindred Problems, 217; British Flowering Plants, 
W. F. Kirby, 222; the Study of Plant Life for Young 
People, M. C. Stopes, 298; Plant Life, Studies in 
Garden and School, H. F. Jones, 298; the Romance of 
Plant Life, G. F. Scott-Elliot, 298; the Green Gate- 
way, a Peep into the Plant World, F. G. Heath, 298; 
the Plants of New South Wales, W. A. Dixon, 366 
Plaskett (J. S.), Spectrum and Radial Velocity of Mira, 
518 
Pleyel (J. von), History and Origin of Zoological Gardens, 
62 
Plimmer (H. G.), Effects produced on Rats by the 
Trypanosomata of Gambia Fever and of Sleeping Sick- 
ness, 420 
Pluvinel (M. le Comte de la Baume), Observations of Total 
Solar Eclipses, 257 
Pochin (Mr.), Instrument 
Spirals, 621 
Pocock (R. I.), English Domestic Cats, 478 
Pocock (Tf. L.), the Geology of the Country around 
Macclesfield, Congleton, Crewe, and Middlewick, 305 
Poe (C. H.), Cotton, its Cultivation, Marketing, Manufac- 
ture, and the Problems of the Cotton World, 27 
Poetry, Nature Knowledge in Modern, Alexander Mackie, 
485 
Poisoning by 
Corney, 590 
Poizat (M.), a Continuous Apparatus for the Preparation 
of Pure Oxygen, 311 
Polariscope, Intensification of ‘* Contrast ”’ 
a, Dr. Felix Biske, 498 
Pollok (Dr. J. H.), the Principal Lines of the Spark 
Spectra of the Elements, 359 
Pompilian (Mlle.), a Respiratory Calorimetric Room, 168 
Pope (W. J.), Development of the Atomic Theory, 94; 
Resolution of Tetrahydro-p-toluquinaldine into its 
Optically Active Components, 358; Trimethylplatini- 
methyl Hydroxide and its Salts, 575 
Popplewell (Frank), some Modern Conditions and Recent 
Developments in Iron and Steel Production in America, 
438 
Porifera (Sponges), Igerna B. L. Sollas, 31 
for describing Logarithmic 
Turtle’s Flesh in Fiji, Dr. B. Glanvill 
by Means of 
Porsch (Dr. O.), Illustriertes Handwéorterbuch der 
Botanik, 28 
Porter (Dr. A. E.), Preservatives in Food and Food 
Examination, 145 
Position-line Star Tables, for Fixing Ship’s Position by 
Reduction to Meridian and Prime Vertical without 
Logarithmic Calculation, H. B. Goodwin, 197 
Positive Charge Carried by the a Particle, the, Frederick 
Soddy, 438 
Positive Streams in 
Swinton, 583 
Potonié (Prof.), Parallelism between Different Kinds of 
Peat and Different Kinds of Coal, 84 
Pottevin (Henri), the Purification of Sewage by 
Filters, 600 
Potts (Edward), the North American Fresh-water Medusa 
of Microhydra, 324 
Power (F. B.), Constitution of Chaulmoogric and Hydno- 
carpic Acids, 503 
Power Transmission from Electric Motors, Mechanism of, 
Wilfred L. Spence, 591 
Poynting (Prof. J. H., F.R.S.), some Astronomical Con- 
sequences of the Pressure of Light, Discourse at Royal 
Institution, 90 
Prehistoric Story of Mankind, the, the Human Epic, John 
Frederick Rowbotham, 73 
Preservatives in Food and Food Examination, Dr. John 
C. Thresh and Dr. A. E. Porter, C. Simmonds, 145 
Price (T. S.), Electrolytic Preparation of Dialkyl- 
“Crookes ’? Tubes, A. A. Campbell 
Turf 
disulphides, 23; Depression of the Freezing Point of 
Aqueous Solutions of Hydrogen Peroxide by Potassium 
Persulphate and other Compounds, 503 
Price (Dr. T. Slater), Electrolytic Deposition of Zine using 
Rotating Electrodes, 621 
Prince (Dr. Morton), the Dissociation of a Personality, a 
Biographical Study in Abnormal Psychology, 102 
Prindle (L. M.), the Gold Placers of Forty-mile, Birch 
Creek, and Fairbanks Regions, Alaska, 184; Rampart 
Gold-placer Region, Alaska, 256 
Prior (G. T.), Striiverite, a New Mineral, 574; Zinciferous 
“fennantite from the Binnenthal, 574 
Prizes Awarded and Proposed by the Paris Academy of 
Sciences, 231 
Probability: the Problem of the Random Path, Prof. 
Reginald A. Fessenden, 392; Vox Populi, Dr. Francis 
Galton, F.R.S., 450, 509; F. Perry-Coste, 509; a 
Problem in Chance, Geo. P. Mudge, 461; Mean or 
Median, R. H. Hooker, 487; G. Udny Yule, 534 
Problem of the Rhodesian Ruins, Dr. David Randall- 
Maclver, 369 
Problems of Applied Chemistry, Prof. George Lunge at 
the Royal Institution, 617 
Progressive Waves in Rivers, Dr. Vaughan Cornish, 597 
Prolegomena to Theology, some, Wilhelm Wundt, 363 
Prominence Observations (1906), 448 
Proteins, Nomenclature of the, W. S. Giles, 439 
Protozoa, Prof. Marcus Hartog, 31 
Protozoa, the Immortality of the, J. Shawcross, 320 
Protozoology, the Scope and Problems of, Prof. E. A. 
Minchin, Lecture at the University of London, 115 
Psychology: Dictionary of Philosophy and Psychology, 
73; the Dissociation of a Personality, a Biographical 
Study in Abnormal Psychology, Dr. Morton Prince, 102 ; 
Crystal Gazing, its History and Practice, with a Dis- 
cussion of the Evidence for Telepathic Scrying, , North- 
cote W. Thomas, 125; les Révélations de 1’Ecriture 
d’aprés un Contrdle scientifique, Alfred Binet, 148; 
Voélkerpsychologie, eine Untersuchung der Entwickl- 
ungsgesetze von Sprache, Mythus und Sitte, Wilhelm 
Wundt, 363; Sex and Character, Otto Weininger, 481 
Public Health, Prof. R. T. Hewlett, 544 
Pulsation, Rhythmical, in Scyphomedusz, Alfred G. Mayer, 
545 
Purington (C. W.), Methods and Costs of Gravel and 
Placer Mining in Alaska, 184 ; 
Purser (F.), Elementary Geometry based on Euclid’s 
+ Elements, 74 
Purvis (J. E.), 'nfluence of Spectral Colours on the 
Sporulation of Various Species of Saccharomyces, 95; 
Influence of a Strong Magnetic Field on the Spark 
Spectra of Titanium, Chromium, and Manganese, 189 
Putnam (Prof. F. W.), Recent Cave-exploration in Cali- 
fornia, 156 
Rabies, Influence of Radium 
Bongiovanni, 15 
Racing, a Law of Record Times in, 463 
Radial Velocities, Stars with Variable, 378 
Radial Velocity of Mira, Spectrum and, J. S. Plaskett, 518 
Radiography: Absorption of the Radio-active Emanations 
by Charcoal, Sir James Dewar, F.R.S., 6; Influence of 
Radium on the Virus of Rabies, Dr. Bongiovanni, 15 ; the 
Production of Radium from Actinium, Bertram B. Bolt- 
wood, 54; Prof. E. Rutherford, F.R.S., 270; Radium and 
its Disintegration Products, Dr. Bertram B. Boltwood, 223 ; 
the Effect of Radium on the Strength of Threads, J. L. 
McKee and Prof. W. B. Morton, 224; Effect of Tempera- 
ture on the Activity of Radium, Dr. Howard L. Bron- 
son, 262; Presence of Neon in Radio-active Minerals, 
Hon. R. J. Strutt, F-R.S., 102; New Type of X-ray 
Tube, Mr. Rosenthal, 136; a New Method of regulating 
X-ray Tubes, G. Berlement, 624; Absorption of the 
Inert Gases by Charcoal, Sir James Dewar, F.R.S., 
126; the Composition of Thorianite and the Relative 
Radio-activity of its Constituents, Dr. E. H. Biichner, 
165 ; Radio-activity of the Alkali Metals, N. R. Campbell 
and A. Wood, 189; Radio-active Transformations, Prof. 
E. Rutherford, F.R.S., Hon. R. J. Strutt, F.R-S., 195; 
on the Virus of, Dr. 
