Nature, "1 

 August 12, igaaj 



Index 



W. Hughes ; Prof. T. R. Merton. 683 ; Prof. A. 



Smithells, 745 

 Bottomley, Dr. Frank, J. Thomson, 240 

 Boyle's Experiments on Capillarity, S. Skinner, 518 

 British Scientific Instruments, Prof. W. M. Bayliss, 106 

 Buttercup, A Fossil, Prof. T. D. A. Cockerell, 42 ; Mrs. E. 



M. Reid, 136 

 Calcium Carbide and the Board of Trade, Prof. F. Soddy ; 



H. E. A., 343 

 Calendar : Reform of the. Mean Value of the Year, A. 



Rose-Innes, 44 

 Cephalic Index and Sex, Prof. W. Johannsen, 714 ; Miss 



R. M. Fleming, 715 

 Cheek-Mole, Inheritance of a, G. W. Harris, 78 

 Chemical Warfare, Prof. F. Haber ; Sir T. E. Thorpe, 40 

 Chemistry, Arabic, E. J. Holmyard, 778 

 Cohesion, W. Taylor, 10 

 Colloids, Protective, A Pretty Lecture Experiment, Dr. 



J. N. Friend, 341 

 Columnar Structure in Sandstone Walls of a Glass Furnace, 



Dr. J. Weir French, 274 

 Comets, Observation of, W. F. Denning, 613 

 Continuous Radiation found in some Celestial Spectra 



beyond the Limit of the Balance Series of Hydrogen, 



On the, W. H. Wright, 810 

 Courtship, Structures and Habits associated with, Dr. 



J. C. Mottram, 77 

 Definition, Resohdng Power, and Accuracy, A. Mallock, 



678 ; T. Smith, 745 

 Diffraction by Molecular Clusters and the Quantum 



Structure of Light, Prof. C. V. Raman, 444 

 Dynamical Problems, On Immediate Solutions of some. 



Prof. A. Gray, 645 ; Sir G. Greenhill, 778 

 Earthquake Focus, The Depth of, Prof. S. K. Banerji, 108 

 Economics, A Problem in, E. G. Bilham, 341 

 Einstein's Aberration Experiment, Prof. C. V. Raman, 477 

 Elhptic Logarithmic Spiral. The, a New Curve, H. S. 



Rowell, 716 

 Elongated Bodies, The Directive Tendency of, W. D. 



Lambert, 271 

 Evolution : Some Problems in, J. T. Cunningham, 41, 173 ; 



Sir G. Archdall Reid, 104 ; Prof. R. R. Gates, 174 ; 



Dr. S. C. Harland, 175 ; Statistical Studies of, C. F. A. 



Pantin, 273, 413 ; Dr. J. C. Willis and G. U. Yule, 



274. 413 

 Evolutionary Faith and Modern Doubts, C. R. Crowther, 



777 

 Flowering Dates of Trees, W. L. Fox, 310 

 Force, Generalised Lines of, Sir Oliver Lodge, 74 

 Fossils in Burmese Amber, Prof. T. D. A. Cockerell, 713 

 " G. B. M.," Prof. A. Gray, 712 



Geology and the Nebular "Theory, Prof. A. P. Coleman, 775 

 Gid Parasite, The Name of the. Prof. T. D. A. Cockerell, 310 

 Globular Lightning Discharge, Prof. A. P. Chattock, 106 

 Gold in Devonshire, Discovery of, Prof. W. T. Gordon, 583 

 Gravatation and Einstein's Theory, Some Terrestrial 



Experiments on. Prof. G. A. Schott, 106 

 Haloes : and Earth History : A New Radioactive Element, 



Prof. J. Joly, 517, 578 ; of Ytterby, The Small, Prof. J. 



Joly, 711 

 Hearing : The Helmholtz Theory of, Dr. E. W. Scripture, 



518 ; A. S. E. Ackermann, 649; Dr. H. Hartridge, 649; 



"The Resonance Theory of. Dr. H. Hartridge, 76, 374 ; 



Dr. W. Perrett, 176 

 Heredity, The Hormone Theory of, J. T. Cunningham, 343 

 Hydrogen, Active, and Nitrogen, Dr. G. L. Wendt ; Dr. 



F. H. Newman, 749 

 Hydroids, Cyclic Conditions and Rejuvenation in, R. 



Elmhirst, .208 

 Hymenoptera Aculeata, The Spiracular Muscles of. Miss 



Annie D. Betts, 813 

 Ice at Low Temperatures, The Brittleness of, L. Hawkes, 240 

 Influenza, Age Incidence of. Miss Annie D. Betts, 240 ; G. 



W. Butler, 342 

 Intelhgence Statistics, Dr. R. W. Lawson, 716 

 Isotopes, Series Spectra of, The Difference between. Prof. 



P. Ehrenfest, 745 ; Prof. N. Bohr, 746 

 Knowledge, The Organisatioft of, W. W. Leisenring, 715 ; 



Miss F. E. Cave ; The Writer of the Article, 716 

 Land Snails of the Madeira Islands, Prof. T. D. A. Cockerell, 



446 



Langley Machine, The, and the Hammondsport Trials, 



G. Brewer, 305 ; The Writer of the Article, 307 

 Light, The Speckled Wave Front of, L. F. Richardson, 



683 ; The Speed of. Dr. E. H. Kennard, 581 

 Lunar Periodicity in Reproduction, H. M. Fox, 237 

 Malaria, The Conquest of, Col. W. G. King, 647 

 Man, Sir G. Archdall Reid, 579 

 Memory, Sir G. Archdall Reid, 551 

 Mercury : from Different Sources, The Atomic Weight of. 



Prof. J. N. Bronsted and Prof. G. Hevesy, 780 ; The 



Isotopes of. Prof. T. H. Laby and W. Mepham, 207 

 Metchnikoflf (Mecnikov) and Russian Science in 1883, 



Prof. B. Brauner, 478 

 Microscope Illumination and Fatigue, H. J. Denham, 78 

 Microscopes and Microscopic Definition, Test-plates for, 



A. Mallock, 205 

 Mind, Sir G. Archdall Reid, 515 

 Molecular Structure of Amorphous Solids, Prof. C. V. 



Raman, 138 

 Molecules, Anistropy of, Prof. C. V. Raman, 75 

 MoUusca, Self-fertilisation in, G. C. Robson, 12 

 Mortar, The Weathering of, N. M. Richardson, 310 ; 



C. Carus-Wilson, 478 

 Mosquito Larvae, The Destruction of, in Salt or Brackish 



Water, J. F. Marshall, 746 

 Muscular Efficiency, A. Mallock, 711 

 Natural History in Schools, The Teaching of, E. W. Shann, 



747 ; A. G. Lowndes, 748 

 Nectar-sipping Birds, Sir Herbert Maxwell, 612 

 Neon Lamps, W. E. Curtis, 343 



Optical Resolving Power and Definition, T. Smith, 745 

 Organic Substances in Plants, Transport of. Prof. H. H. 



Dixon and N. G. Ball, 236 ; S. Mangham, 476 

 Oscillation Circuits for the Determination of Di-electric 



Constants at Radio Frequencies, P. A. Cooper, 814 

 Oyster, The Blood-cells of the. Dr. J. H. Orton, 612 

 a-Particles as Detonators, G. H. Henderson, 749 

 Pencil Markings in the Bodleian Library, C. Ainsworth 



Mitchell, 516 

 Ph.D., The EngUsh, Prof. E. W. Scripture, 780 

 Phenological Observations, L. C. W. Bonacina, 373 

 Physiological Phenomenon, A Curious, R. M. Deeley, 44 ; 



J. H. Shaxby, 77 

 Pilot Lamps in Laboratories, H. J. Denham, 683 

 Plumage, The Evolution of. Prof. J. Cossar Ewart, 779; 



H. F. G., 778 

 Pricked Letters and Ultimate Ratios, Prof. F. Cajori, 



477 

 Pythagoras's Theorem as a Repeating Pattern, Major P. 



A. MacMahon, 479 ; J. R. Cotter, 579 

 Quanta, Half, W. E. Curtis, 713 

 Radiant Spectrum, The, Prof. C. V. Raman, 175 ; Dr. H. 



Hartridge, 445 

 Radiation from the Sky, Thermo-electric Instrument 



for Measuring, L. F. Richardson, 240 

 Radio-telegraphy, Long-distance, Some Problems of, Dr. 



J. A. Fleming, 209 

 Radium Synthesis of Carbon Compounds from Air, 



F. H. Glew, 714 

 Rainbow Pecuharity, A, Major W. J. S, Lockyer, 309 ; 



Prof. J. P. Dalton, 716 

 Rainfall and Drainage: at Rothamsted in 1921, W. D. 



Christmas, 107 ; in 1921, Prof. J. Hendrick, 207 

 Rainfalls, Forecasting Annual, Prof. A. McAdie, 139 

 Raninide, Tribal Name of the, Rev. T. R. R. Stebbing ; 



Prof. G. C. Bourne, 108 

 Rat, The, and its Repression, Lord Aberconway, 744 

 Relativity, the Theory of, A Proposed Laboratory Test of. 



Dr. H. S. King, 582 ; Dr. R. W. Lawson, 613 

 Research Degrees and the University of London, Dr. A. 



M. Davies, 238 ; Prof. P. G. H. Boswell, 373 

 Russia, Scientific Literature for. Sir Richard Gregory and 



Dr. C. Hagberg Wright, 208 

 Russian Names, Transcription of, Prof. B. Brauner, 552 ; 



Major-Gen. Lord Edward Gleichen, 648 ; J. G. F. 



Druce, 777 

 Safeguarding of Industries Act, 1921, Major A. G. Church, 



583 

 Schizophyllum commune, Fr., Revival of Sporophores of, 



F. A. Mason, 272 

 Science : at the Post Office, Sir W. Noble, 609 ; The Writer 



