XXXIV 



Index 



[Nature, 

 September 29, 1921 



Molecular Attractions in Solutions, Molecular Size and 



Range of, Prof. J. B. "Leathes, 138; Structure and Energy, 



Prof. J. R. Partington, 172 ; Prof. A. O. Rankine, 203 ; 



Prof. A. W. C. Menzies, 331 

 Molecules, Atoms and, The Dimensions of. Prof. W. L. 



Bragg and H. Bell 107 

 Molluscan Fauna of Scottish Lakes, and a Pisidium new to 



the British Isles, B. B. Woodward, 715 

 Moon, Meteors on the, J. W. Gordon, 234 ; Dr. A. C. D. 



Crommelin, 235 

 Mutations and Evolution, Prof. R. R. Gates, 714 ; The 



Writer of the Article, 715 

 Nickel, The Constitution of, Dr. F. W. Aston, 520 

 Ocean Tides, A. C. Tennant, 299; Prof. J. Proudman, 300; 



H. A. Marmer, 393 ; Dr. W. Bell Dawson, 651 

 Oceanographic Research in the British Empire, Dr. N. 



Annandale and Major R. B. S. Sewell, 139 ; Prof. W. A. 



Herdman, 172 

 Ochreous Flint Artefacts from Sheringham, J. Reid Moir, 



684 

 Oil, Waste, from Ships, Prof. T. D. A. Cockerell, 333 

 Optophone, Amplifying the, A. A. Campbell Swinton, 8 ; 



Dr. E. E. Fournier d'Albe ; J. W. French, 43 

 Ornithological Problem, An, G. A. Macmillan, 746 

 Oyster, Native (O. edulis). Sex-change in the. Dr. J. H. 



Orton, 586 

 Palestine, Science and Technology in, Daisy L. Adler, 458 

 Pathogenic Organisms in the Pollen of Flowers and Disease 



in Bees, Hon. Col. C. J. Bond, 584 

 Pearl, The Japanese Artificially Induced, Dr. W. Win- 

 grave, 620; Dr. H. Lyster Jameson, 621 

 Peat, Irish, The Exploitation of, Dr. A. Fleck, 779 

 Peltier Effect, The, and Low-temperature Research, Dr. G. 



Martin ; A. A. Campbell Swinton, 43 ; Sir Oliver Lodge, 



73 ; Dr. G. Martin, 141 

 Physics, The Concept of " Space " in, Dr. H. Jeffreys, 267 

 Physiological Reactions in the Protozoa, J. S. Dunkerly, 395 

 Phytophthora, Sexual Organs of, Prof. G. H. PethyWidge, 



204 

 Picture-hanging Wire, R. B. Marston, 362 ; A. J. Stubbs, 



395 ; Principles of. Sir G. Greenhill, 491 

 Plant-growth, Observations of, with the Recording Ultra- 

 micrometer, J. J. Dowling, 523 

 Polarisation Phenomena in an X-ray Bulb, Dr. S. Ratner, 



522 

 Porto Santo, Natural History of. Prof. T. D. A. Cockerell, 



10 

 Positive Electricity, The Elementary Particle of. Prof. A. II. 



Patterson, 75 

 Potassium Cyanide, The X-ray Structure of, P. A. Cooper, 



745 



Prehistoric Cooking-place in Norfolk, A, Nina F. Layard, 

 623 



Primrose Flowers, The Colour of, Major R. O. Latham ; 

 The Writer of the Article, 301 ; Dr. J. W. H. Harrison, 

 359 ; G. Abbott, 395 ; F. H. Perrycoste, 459 



Protozoa : and the Evolution of the Gregarious Instinct, 

 R. J. 'Ludford, 332 ; Phenomena of " Intelligence " in the, 

 E. Heron-Allen, 456 ; Physiological Reactions in the, 

 J. S. Dunkerly, 395 



Quantum Theory, The, and Homogeneous Vibrations, Sir 

 Arthur Schuster, 233 



Quartzite Implements of Rostro-carinate and Early PaUxo- 

 lithic Types in Uganda, The Discovery of, J. Reid Moir, 

 649 



Radiation from the Carbon Arc, Dr. H. H. Plaskett, 648 



Relativity : and the Deviation of Spectral 'Lines, Prof. H. J. 

 Priestley, 43 ; and the Velocity of Light, C. O. Bartrum ; 

 J. H. Jeans, 42; Sir Oliver Lodge, 73; C. O. Bartrum, 

 141; J. H. Jeans, 169; Space, and Ultimate Reality, 

 L. C. W. Bonacina, 171 ; The Principle of. Solar Eclipse 

 Results and, C. E. Stromeyer ; Sir F. W. Dyson, 682 



Reparation Act, The : and Scientific Research, Prof. J. R. 

 Partington, 394 ; Hon. H. Onslow, 457 ; J. S. Dunkerly, 

 427 ; and the Cost of German Publications, Prof. j. 

 Stanley Gardiner, 359 



Rhynchodemus Scharffi, An Addition to the British Fauna, 

 Prof. A. Dendy, 298 



Science : and Civilisation, Capt. B. J. Marden, 623 ; E. Hen- 

 derson Smith and Major A. G. Church, 684 ; Dr. C. V. 



Drysdale, 715 ; and Technology in Palestine, Daisy L. 



Adler, 458; The Neglect of. Prof. S. J. Hickson, 779; 



Transcendental Premises in. Sir Henry H. Howorth, 9 

 Scientific Research, The Reparation Act and, Prof. J. R. 



Partington, 394 ; J, S. Dunkerly, 427 ; Hon. H. Onslow, 



457 

 Sexual Organs of Phytophthora, Prof. G. H. Pethybridge, 204 

 Sheep, Gold-coloured Teeth of, W. J. L. Abbott, 459 

 Sodium Vapour, The Electrodeless Discharge in. Prof. J. K. 



Robertson, 269 

 Solar Eclipse Results and the Principle of Relativity, C. E. 



Stromeyer ; Sir F. W. Dyson, 682 

 Solar Radiation in Relation to Faculae, H. H. Clayton, 108 

 Sound Transmitted through Earth, R. G. Durrant, 140 

 Sources and Sinks, A. F. Dufton, 522 ; Dr. H. S. Allen, 



622 

 " Space " : or " ^ther," Prof. A. S. Eddington, 201 ; Dr. 



Norman R. Campbell ; L. C. W. Bonacina, 234 ; The Con- 

 cept of, in Physics, Dr. H. Jeffreys, 267 ; The Physical 



Continuity of, L. C. W. Bonacina, 300; Commdr. J. G. 



McHardy, 360 ; The Physical Status of. Dr. H. Jeffreys, 



394 ; L. C. W. Bonacina, 459 

 Spectral Lines : The Deviation of. Relativity and, Prof. 



H. J. Priestley, 43 ; The Displacement of, by a Gravita- 

 tional Field, Prof. H. J. Priestley, 585 

 Spectral Series, Doublets in, D. Rogestvensky, 203 



Doublets in, D. Rogestvensky, 203 

 Stellar Atmospheres, The Stationary H- and K-lines of 



Calcium in. Prof. Megh Nad Saha, 488 

 Sun-spot Group, The Great, and Magnetic Disturbances, 



May 8-21, Father A. L. Cortie, 426 

 Superannuation Systems, American and British, W. Palin 



Elderton, 651 ; Dr. J. W. Evans; W. Palin Elderton, 683 

 Swallows, Scarcity of, A. Pride, 779 

 Tails, Human and other. Prof. F. Wood Jones ; Sir A. 



Keith, 487 

 Tides, Ocean, A. C. Tennant, 299 ; Prof. J. Proudman, 300 ; 



H. A. Marmer, 393 

 Timbers, Commercial, Scientific Names for, R. T. Baker, 45 

 Time-intervals, Short, The Measurement of Single and Suc- 

 cessive, Prof. A. Pollard, 585 

 Tools of Mousterian Age, A " New " Type of. Prof. C. G. 



Seligman, 330 

 Underground Water, The Drought and. B. Hobson, 684 

 Vacuole, The Contractile, Prof. W. M. Bayliss, 810 

 Variegation in a Fern, Dr. W. Bateson, 233 

 Vector Analysis, Symbols in, R. H. Nisbet, 362 

 Vegetation around London earlier than in the Provinces, C. 



Harding, 269 

 Vision, The Theory of. Dr. F. W. Edridge-Green, 361 

 Vitamines, The Designation of, Prof. H. E. Armstrong, 72 ; 



Prof. A. Liversidge, 45 

 Vowel Sounds, Nature of, C. de Wesendonk ; Prof. E. W. 



Scripture, 12 ; Prof. C. V. Raman, 332 ; Prof. E. W. 



Scripture, 333 

 Worms Die? Why do. Rev. H. Friend, 172 ; G. T. Harris, 



269; W. J. L. Abbott, 490; J. H. Coste, 491 

 Wrightson's Hypothesis of Audition, Dr. H- Hartridge, 811 

 X-ray Structure of Potassium Cyanide, The, P. A. Cooper, 



745 

 X-rays and their Physiological Effects, A. B. Bruce, 140 

 Young's Interference Experiment, Dr. R. A. Houston, 268; 



Lord Rayleigh, 298 ; Prof. P. N. Ghosh, 362 ; and the 



Spectrometer, Prof. J. K. Robertson, 457 

 Zinc, Metallic, The Production of, Sir R. A. S. Redmayne ; 



The Writer of the Note, 361 



Corundum in the Northern and Eastern Transvaal, A. D. 

 Hall, 794 



Cosmic Evolution, Prof. J. E. Boodin, 126 



Cosmogony and Stellar Evolution, J. H. Jeans, 557, 588 



Cotton-growing : in the British Empire, Grant by the 

 Government for Fostering, 467 ; Proposed Register of 

 Qualified Men for the Development of, 244 



Cotton Hairs, Method of Cutting Sections of, H. J. Den- 

 ham, 299; Dr. W. 'L. Balls and H. A. Hancock, 361 



Credulity, Modern, 705 



Cretaceous-Tertiary Boundary in North America, The, Prof. 

 A. C. Seward, 282 



