xl 



Index 



[Nature, 

 October 7, 1920 



ciples of, 338 ; The Linguistic Survey of, Sir George 

 Grierson, 688 



Indian: Beetles, 64; Bauxites, Dr. L. L. Fermor, 212; 

 Chemical Service, The, Prof. Jocelyn Thorpe, 324; 

 Sir Prafulla Chandra Riy, 325 ; Dr. M. W. Travers, 

 354 ; Students in America and Japan, Facilities for, 

 R. K. Sorabji, 377 



Indians North of Mexico, Calendars of the, Miss L. 

 Cope, 75 



Indo-Aryan Vernaculars, The, Sir George Grierson, 557 



Induction Coil, Action of the, Prof. E. T. Jones, 369 



Indus, Brahmaputra, and Ganges, Relations of the. Dr. 

 E. H. Pascoe, 835 



Industrial : EflRciency and Factory Management, Biblio- 

 graphy of, H. G. T. Cannons, 641 ; Fatigue, Research 

 Board, First Annual Report of the, 786 ; Seventh Re- 

 port of the, S. Wyatt, 657 ; Fellowship System for 

 the Promotion of Industrial Research, The, T. LI. 

 Humberstone, 665 ; Peace, The Road to, 55 ; 

 Psychology, The Present Attitude of Employees to, 

 Mrs. S. Brierley, 400 ; Research, A. P. M. Fleming, 

 771 ; Applied Science and, J. W. Williamson, 387 ; 

 Prof. F. Soddy, 422 ; Major A. G. Church, 423 ; J. 

 W. Williamson, 518; Scientific Direction of, Major 

 A. G. Church, 40 ; Scientific Research, The Organisa- 

 • tion of. Dr. C. E. Kenneth Mees, 771 



Industry, Optical Instruments in, 394 



Influenza : Dr. Carnwath, 151 ; Epidfemic of 1918-19 in 

 Switzerland, The, 400 ; on Shipboard, Majors McKen- 

 drick and Morison, 400; Returns, 274, 367; of the 

 Registrar-General, 557 ; The Relation of the Bacillus 

 influenzce to. Dr. F. G. Blake, 763 



Infra-red Arc Spectra of Seven Elements, The, C. C. 

 Kiess and W. F. Meggers, 726 ; Spectra of Nebulae, 

 W. H. Wright, 149 



Injurious Insects Observed in Ireland During 1916-18, Prof. 

 G. H. Carpenter, 634 



Insect : Life on Sewage Filters, Dr. W. H. Parkinson and 

 H. D. Bell, 131; Life: Wonders of, Details of the 

 Habits and Structure of Insects, J. H. Crabtree, 651 ; 

 Pests, Artificial versus Natural Methods of Control 

 of, F. W. Urich, and others, 503 ; Control of, L. 

 Lloyd; E. B. Blakeslee ; F. S. Brooks; C. F. C. 

 Beeson, 629 ; W. J. Phillips, 662 ; F. C. Bishop and 

 H. P. Wood. 663 



Insects of Arctic Canada. 730 



Institute : of Industrial Administration, Foundation of the. 

 E. T. Elbourne Elected Honorary Secretary, 754 ; of 

 Metals, The May Lecture of the, 499: of 'Optics of 

 France, Work at the, A. de Gramont de Guiche. 466 



Institution of Sanitary Engineers, The Gold Medal of the, 

 Presented to Major A. J. Martin. 526 



Integration, Approximate, Some Methods of, and of 

 Computing Areas, A. S. Percival, 70 



Intellectual Stock-taking, 607 



Interference Methods. The Application of. to Astronomical 

 Measurements, A. A. Michelson, 666 



Interferometer, The, in Physical Measurements, 563 



Interferometry, Displacement, by the Aid of the Achro- 

 matic Fringes, Prof. C. Barus, 563 



International : Bureau of Weights and Measures at Sevres, 

 The. 242 ; Council for Fishery Investigations, Prof.' 

 W. C. Mcintosh. 167. 358; Federation of University 

 Women. First Conference of the. 662 ; Fishery In- 

 vestigations, 84 ; Research Council : Constitutive 

 Assembly held at Brussels, July i8th to July 28th. 

 iqro, Report of Proceedings, Edited bv Sir 'Arthur 

 Schuster, 543 



Intrusive Rocks 'of the Dundee District, The, D. Balsillie. 

 666 



Inulin. The Diastatic Hydrolysis of, H. Colin. -,So 



Inventor. Relations of the, to the State. D. Leechman, 

 366: W. F. Reid, 367 



Invortin in Pure Honey, The Search for. A. Caillas, 218 



Iodic Acid : as a Microchemiral Reagent Characteristic of 

 Gaseous Ammonia. G. Denig^s, 763 ; as a Micro- 

 chemical Reagent for Calcium, Strontium, and Barium, 

 G. Denig^s, 379 



Iodine. Sorption 'of. by Carbon. J. B. Firth. 602 



T-doamidines, The, J. Bougault and P. Robin, 666 



lonisation : and Activity of largely Ionised Substances, 

 A. At. Noiyes and D. A. Maclnnes, 667 ; in the Solar 

 Chromosphere, M. N. Saha, 232 



Ions, Electrons, and Ionising Radiations, Dr. J. A. 

 Crowther, 740 



Ireland : Department of Agriculture and Technical Instruc- 

 tion, Impending Retirement of T. P. Gill from the 

 Secretaryship of the, 376 ; The Peat Resources of, 

 Prof. P. F. Purcell, 791 



Irish Eskers;, The, Prof. J. W. Gregory, 346 



Iron : and Steel Industry in Lorraine, The Future of the, 

 Prof. H. C. H. Carpenter, 588 ; and Steel Institute, 

 Annual Meeting of the, 179 ; Presidential Address to 

 the. Dr. J. E. Stead, 403 ; Trades during the War, 

 The, M. S. Birkett, 787 ; Bacteria, Dr. D. Ellis, 323 ; 

 Cast, The Heat Treatment of, 290 ; Core of a 

 Transformer or of an Induction Coil, Magnetic Char- 

 acteristics of the. The Late Prof. B. O. Peirce, 243 ; 

 -depositing Bacteria, Dr. D. Ellis, 727 ; and their 

 Geologic Relations, E. C. Harder,, 727 ; Ores of Scot- 

 land, The, M. Macgregor, and others, vol. XL, 419 ; 

 The Deposition of, by Electrolysis, . W. E. Hughes, 

 594 



Ishi, The Medical History of, S. T. Pope, 755 



I sis, and other Periodicals dealing with the History of 

 Science, 241 



Isomerism. An Electric Theory of. Dr. H. S. Allen, 71 ; 

 W. E. Garner; S. C. Bradford, 171 



Isotopes : and Atomic Weights. Dr. F. W. Aston, 617 ; 

 The Separation of,, Dr. T. R. Merton and Brig. -Gen. 

 H. Hartley, 104 ; of Chlorine, The Separation of the, 

 D. L. Chapman, 487, 611 ; Prof. F. Soddy, 516. 642; 

 A. F. Core, 582.', 677 



Italy, Agriculture in, in Imperial Times, W. E. Heitland, 

 "557 



Jamaica, Flora of, Vol. IV., Dicotyledons: Families 



Leguminosae to Callitrichaceae,, Wi Fawcett and Dr. 



A. B. Rendle, 738 

 Japan, Effect of Topography on Precipitation in, Prof. 



Terada, 599 

 Japanese Botanical Work, 664 

 Java, Long-range Forecasting in, 729 

 Jib, a Long Wooden/, for a Derrick Crane, 838 

 Jupiter: Conjunction of, with Neptune, 213; The Great 



Red Spot on, W. F. Denning, 423 ; The Planet, Rev. 



T. E. R. Phillip^,, 500 

 Just Look ! or, How the Children Studied Nature, L. 



Beatrice Thompson, 651 



K and L Absorption of the Heavy Elements, Calculation 



of the Limiting Frequencies of, L. de Broglie, 218 

 Kalahari, The, and Ovamboland, Prof. E. H. L. Schwarz, 



297 

 Karroo System, The Reptilian Fauna of the, S. H. Haugh- 



ton, 837 

 Karthala Volcano, .An Eruption of the, at Grand Comore 



in August, 19181, A. Lacroix, 666 

 Katharometer, The Theory of the, H. A. Daynes, 122 

 Kent's Cavern, The Condition of, E. A. Martin, 742 

 Kerr Phenomenon, The Ratio of the Absolute Retardations 



in the, for Different Wave-lengths in the case of 



Nitrobenzene, M. Pauthenier, 634 

 Ketimines, The, G. Mignonac, 347 

 Kew, Royal Botanic Gardens : Bulletin of Miscellaneous 



Information,, 1919, 228 ; Official Guide to the Museum 



of British Forestry at the, 211 ; Question of Guide 



Lectures at the. Lord Sudeley. 178 

 King's Birthday Honours, The, 462 



King's College, London : decision to form an Old Stu- 

 dents' .Association in connection with, 217; Post- 



Graduate Courses for Engineers, 313 

 Kingsley, Mary. Medals, .Award of, 696 

 Kitchener. Lord: as a Scientific Worker, 319; Life of. 



Sir George Arthur, 3 Vols., 319 

 Knowledge: and Power,' 93; L. ' Bairstow, 135; FO.I. : 



Dr. J. W. Evans, 165 ; and Understanding, i 

 Kodaikanal Observations of Prominences, J. and Mrs. 



Evershed, 340 



