xHi 



Title Index 



r Nature, 



\_February 2, 1924 



Phosphorescence caused by Active Nitrogen, Dr. H. 

 Krepelka, 134 



Phosphorus : The Glow of, and its Extinction by Moist 

 Oxygen, Lord Rayleigh, 778 ; The Slow Oxidation of. 

 Miss Elizabeth Gilchrist, 151 



Photo-electric : Activity, Variation in, with Wave-length 

 for certain Metals in Air, T. H. Osgood, 886 ; Cells : 

 for Measurements of Time, G. Ferrie, R. Jouart, and 

 K. Mesny, 952 ; The Amplification of the Current 

 from, and its Applications, G. Ferrie, R. Jouart, and 

 K. Mesny, 814 ; Conduction, The Quantum Equiva- 

 lent in, G. Carlo and J. Franck, 882 



Photographic : Blackening and Coloured Light, T. 

 Otashiro, 808 ; Objectives, The Elementary Algebraic 

 Theory of a Class of, E. T. Hanson, 638 ; Plates for 

 the Extreme Ultra- Violet, Prof. T. Lyman, 202 ; 

 Science, 858 



Ptfotography : A Mercury Flash-light for, K. Suyehiro, 

 219 ; as a Scientific Instrument, Prof. A. E. Conrady 

 and others, 858 ; Faults in. Dr. B. T. J. Glover, 702 



Photometric : Matching Field, The, Dr. L. C. Martin, 26 ; 

 Quantities, Definitions of, 704 



Photometry, An Advance in, E. Steinke, 115 



Photosynthesis, Effect of Infinitesimal Traces of Chemical 

 Substances on, Sir J. C. Bose, 95 



Photo-voltaic Effects, Influence of Polarisation on, R. 

 Audubret, 958 



Physical : Chemistry of Surfaces, Prof. F. G. Donnan, 

 420 ; Education, The Organisation and Administra- 

 tion of. Prof. J. F. Williams, 6 ; Laboratory, The 

 National, Teddington, Annual Visitation, 70 



Physicist, The, in the Textile Industries, Dr. A. E. Oxley, 

 707 



Physics : A Text-book of, Dr. R. S. Willows. Third 

 edition, 649 ; Advanced Practical, for Students, B. 

 L. Worsnop and Dr. H. T. Flint, 467 ; and its Applica- 

 tions, Dr. G. W. C. Kaye, 155 ; Applied : A Dictionary 

 of, edited by Sir Richard Glazebrook. In 5 vols. 

 Vol. 4, 155 ; Vol. 5, 462 ; The Elements of, Prof. A. 

 W. Smith, 587 ; in Industry, Prof. A. Barr, Sir James 

 Ewing, and C. C. Paterson, 587 ; Intermediate, A 

 Text-book of, H. Moore, 277 ; Modern : and the 

 Atom, I ; Essentials of, C. E. Dull, 587 ; More 

 Applications of. Prof. H. C. Carpenter, 462 ; The 

 New, Lectures for Laymen and others. Prof. A. Haas. 

 Translated by Dr. R. W. Lawson, 895 



Phy.sikalische Chemie der Zelle und der Gewebe, Prof. 

 Hober. Fiinfte Auflage, i Halfte, 93 



Physiological : Congress, The Eleventh International, 

 342 ; Science, The Present Tendencies of. Prof. A. 

 V. Hill, 631 



Physiology : Interfacial Forces and Phenomena in, being 

 the Herter Lectures in New York in March 1922, 

 Sir W. M. Bayliss, 579 ; Physical Chemistry and, at 

 the British Association, 671 ; The Physical Aspect 

 of, 579 



Physique, Les Principes de la. Dr. N. R. Campbell. 

 Traduit et adapte en Frangais par Mme. A. M. 

 PebelHer, 860 



Phytochemistry, Contributions to Comparative, J. Zellner, 



675 

 Phytopathology in Horticulture, Prof. J. Westerdijk, 913 

 Pic du Midi, The Astronomical Station of the, J. Baillaud, 



460 

 Pictures, How to Paint Permanent, Prof. M. Toch, 390 

 Piezo-electric Apparatus, Standardising, Dr. D. A. Keys. 



807 

 Pig, growing. The Basal Metabolism of a, T. Deighton, 709 

 Piltdown Man, The Teeth of, Dr. A. Hrdli6ka, 66 

 Pink and Blue Flowers, Dr. W. R. G. Atkins. 876 

 Piperitone, The Electrolytic Reduction of, A. R. Penfold 



and F. R. Morrison, 639 

 Pituitary Gland, A Physiological Function of the, Dr. L. 



T. Hogben and F. R. Winton, 374 

 Pitys, The Genus, W. T. Gordon, 27 

 Plagioclases : in Cleavage-flakes, A Dispersion Method of 



Determining, 117 ; Optical Dispersion of Three Inter- 

 mediate, S. Tsuboi, 117 

 Planets : Heat Radiations of, E. Pettit and S. Nicholson, 



454 ; Minor, Perturbations of the. Prof. A. O. 



Leuschner, 19 



Planetary Surfaces, Study of the, by Polarisation. B. 



Lyot, 887 

 Plant : Biology, Elements of, A. G. Tansley, 273 ; Botany 



of the Living, Prof. F. O. Bower. Second edition. 51 ; 



Cell : An Artificial. Dr. D. T. Macdougal, 669 ; Wall, 



The Structure of the, H. J. Denham, 144 ; Cells. The 



Shape of. F. T. Lewis, 601 ; Extracts, Effect of, on 



Blood Sugar, Dr. W. Thallinner and Margaret C. 



Perry, 164 ; Growth, Effect of Manganese on, J. S. 



McHargue, 739 ; Physiology and Vitalism, Prof. W. 



Stiles, 876 ; Pigments, Studies in, I., J. M. Petrie. 747 ; 



Propagation, C. T. Musgrave, 770 ; Quarantines, The 



Biological Basis of, W. A. Orton and R. K. Beattie. 289 

 Plants : Adaptation of. to the Duration of the Bright 



Period of the Day. V. Lubimenko and Mile. O. 



Sfegloff, 120 ; Culture of. in a Sterile Liquid Medium, 



J. Dauvergne and Mile. Weil, 815; in relation to the 



Health of Man, Dr. A. W. Hill, 376 ; Nerves of. 



Prof. H. H. Dixon, 799 ; New, Dr. O. Stapf, 703 ; 



Primitive. Size and Form in the Vascular Tracts of. 



Prof. F. O. Bower, 112 ; Stomatal Movement in. 



Mechanism of, F. Weber. 407 ; Virus Diseases of : 



III ; Dr. P. Murphy and others. 955 

 Plaster, The Setting of, P. Jolibois and Chassevent. 184 

 Pleistocene of North America. The. and its Vertebrates, 



O. P. Hay, III 

 Plumage (No. 2) Order 1923, Importation of. Regulations 



under the, 910 

 Pneumo-anaesthesiograph. The, F. Franchette, 28 

 Poems of Science : Pages of Indian Earth History, K. A. 



K. Hallowes. 648 

 Poland : Higher Education in. 379 ; Science in. 254 

 Polar : Aurora. Positive Rays and the. H. Bongards, 405 ; 



Climate and Vegetation, L. C. W. Bonacina, 436 ; 



Temperatures and Coal : Measures, Dr. V. Stefansson, 



162 ; Measurements, Dr. V. Stefansson, 472 

 Polish : Academy of Sciences and Letters, Fiftieth 



Anniversary of the, 140 ; Physical Society, The, 173 

 Polonium : carried down with Bismuth Hydrate in Soda 



Solution, The, M. Escher. 226 ; The Constant of. 



Researches on. Mile. S. Maracineanu, 119 

 Polynesian : Culture, A Reconstruction of, 568 ; Types, 



Dr. L. R. Sullivan, 739 

 Poplars. 248 

 Popular Fallacies explained and corrected (with copious 



references to Authorities). A. S. E. Ackermann. 



Third edition. 720 

 Population and Unemployment : Sir William Beveridge, 



421, 548 ; Dr. Marie C. Stopes, 688 

 Pork. The Scottish Taboo of. D. A. Mackenzie. 144 

 Porto Santo. Inquiry into Dental Caries at. Dr. M. 



Grabham. 484 

 Pot Arches. The Design of. T. Teisen, 151 

 Potato : Blackleg, Causal Organism of, H. M. Jennison. 



951 ; Mosaic. Protozoa and. 248 ; Varieties, A Leaf 



Index as a help to the Identification of, R. N. 



Salaman. 922 

 Potatoes : Skin Spot of, Shapovalov ; W. A. Millard and 



S. Burr, 455 ; Virus Diseases of. Dr. P. Murphy, 293 

 Potential near Electrodes, Gradient of, Prof. S. Pienkowski, 



99 

 Poulsen Arc Generator. The, C. F. Elwell. 860 

 Poultry, Heredity in, Prof. R. C. Punnett, 571 

 Powders, the Apparent Compressibility of, Influence of 



the Velocity of Compression on. E. E. Walker. 851 

 Prehistoric Fhnt Mine at South Down. A. Major A. G. 



Wade. 597 

 Preventive : Medicine. An Introduction to the Practice 



of. Prof. J. G. Fitzgerald, assisted by Prof. P. Gillespie 



and H. M. Lancaster, 785 ; Vaccination against 



Acute Conjunctivitis due to the Weeks Bacillus, C. 



Nicolle, E. Conseil. and A. Cuenod, 380 

 Priestley medal of the American Chemical Society, The, 



bestowed on Dr. I. Remsen, 632 

 Primitive : Communities, Depopulation of, J. H. Hutton, 



III; Culture analysed. Dr. A. C. Haddon, 198; 



Tider i Norge : En oversigt over stenalderen. Dr. H. 



Shetelig. 390 

 Printing : Paper and Pasteboard from Hydrophytes, The 



Manufacture of. 519 ; Telegraph Systems and 



Mechanisms. H. H. Harrison, 649 



