Nature, "I 

 April 14, 1921J 



Index 



xliii 



Racf; ImproMiiiem of ihc, 752 



Kadiation : in Explosions of Hydrogen and Air, \V. 1 . 



David, 362 ; Pressure near the Sun, Prof. A. S. 



Eddington, 59 ; Pressure on Electrons and Atoms, L. 



Page, 451 

 Radiations from Radio-active Substances and the X-rays, 



etc., \ Statistical Method for studying the, A. F. 



Kovarik, 167 

 Radio : -chronometers. Abnormal Indications furnished by, 



with very penetrating X-rays, R. Biquard, 458 ; 



-elements and their .Applications, The, Mme. Curie, 



417: -goniometry. Studies in, O. FerriiS, R. Jouaust., 



R. Mesnv. and A. Perot, 746; -puncture. Microscopic, 



The Mct'h<xl of, S. Tchaholinc, 618 

 Radiogr.iphy of Pictures, The, A. Charon, 746 

 Radiotelegraphy, Elements of, Kieut. E. \V. Stone, 143 

 Radium, The .\Iicrochpniical Reactions of, its Differentiation 



from Barium by Iodic .Acid, G. Denig^s. 2Q0 

 Rafidi6ptcrs (Ins.), Monografia dc I'Ordre dels, R. P. L. 



Navas, 33Q 

 Rainfall at Falmouth, \V. I.. Fox, 50 

 Rajas in India, Rites at the Accession of. Dr. W. Crooke, 



760 

 Raleigh, H.M.S., Steaming Trials of, 150 

 Ramanujan, The late Srinivnsa, Prof. E. H. Neville, 66 1 

 Ramsay .Memorial Fellowship. E. Roux elected to a, 221 

 Ram-stroke in Pipes feeding Turbines with Strong Reaction. 



The, M. de Sparre, 426 

 Rangoon, Forthcoming Establishment of a University at, 



3Q2 



Rat, Whi_te, Effect of Pregnancy on the various Organs 

 of the, Prof. Herring, 550 



Recapitulation and Descent. I.. T. Hogben, 212; Dr. F. A. 

 Bather. 213: Prof. E. \V. MacBride, 280 



Reclamation of Waste Lands, Prof. F. W. Oliver ; Dr. 

 E. J. Russell, 352 



Red : Calves in Black Breeds of Cattle, Prof. I.. J. Cole 

 .nnd Mi»s Sarah Jones, 5J4 : Cross .Societies, t-eague of, 

 Future Activities in the Civil Community of the Public 

 He.ilth Department of the. Prof. Rogei, 310 



Refloating Torpedoed Vessels, Methods for. L. LafTitte, 771 



Refractive Index, The Calculation of the, in Random Sec- 

 tions of Minerals, I.. A. Cotton and Miss M. Peart. 587 



Refraclomeler, .A, for the Determination of Liquid Mixtures, 

 Dr. H. II, Thomas and A. V. Hallimond. 425 



Refractory .M.'iterials, Canister, Silica-rock, Sand, and 

 Dolomite, The Petrography and Chemistry of the, H. H. 

 Thoin.is, .\. F, Hallimond, and E. G. Radlev, 480 



Relativity: A. Mallock, 46: Dr, C. E. St. John,' 6c : K. F. 

 Boltiinger, 66: Prof, J, R. Partington, 113: J. Ever- 

 shed. 357 ; Sir Oliver I^dge, 358 ; Prof A. S. Eddington. 

 644; and the Eclipse Oli-ervations of M.iy, 1919, Sir 

 Fr.ink Dyson. 786; and the Motion of Mercury's Peri- 

 helion, Dr. A. C. D. Crommelin, 787: Articles on, 

 78i-»ii; Bibliography of. 811; of Time, The, Prof. 

 A. S. Eddington, 802 ; Philosophy of. Viscount Haldane, 

 4JI ; Popular, and the Velocity of Light, Sir Oliver 

 Lodge, 325 ; The Avoidance of, which is not of Galileo- 

 Newtonian type. Prof. \V. Peddic, 850; The Gener.il 

 Physical Theory of, J. H. Jeans, 791 ; The Growth of 

 an Idea, E. Cunningham, 784 ; The General Principle 

 of, in its Philosophical and Historical .Aspect, Prof. 

 H. VVildon Carr, 431 ; The Meiaphvsical Aspects of. 

 Prof. H. Wildon Carr, 800: The' Special and the 

 General Theory, A Popular Exposition, Prof, A. Ein- 

 • leiti. Transl.Ttcd by i)r. R. W. Lawson, 336; The 

 Theory of, A Brief Outline of the Development of. Prof, 

 A. Einstein, 783 ; Theory, An Outline of the General. 

 Space. Time, and Gravitation, Prof. A. S. Eddington, 

 822 ; Theory and Experiment in. Dr. Norman Cainpbell, 

 S04 



Rel.ny, A New, for Heavy Currents, Dr, G. Parr, 45R 



Religion : and Science ; From Galileo 10 Bergson, J. S. 

 Hardwick, 338; Science and. The Unity of, i 



R' --.irch • at Universities, Dr. J. W. Evans, 391; The 

 Finance of. Prof. Donnan, .^19; Defence So<'iety, 

 Quartelv Report o( the. 769; Organisation and Coo- 

 duct of. in the U.S.A., Dr. J. R. Angell, ft, 



Revin ■.'■rieiing Cilands in «ome .Australian P' The 



Sfruiiure of the. Marjorie I, Collins, 367 



I/.:,,-:, ,.1 !>,»;..../ ;■•„/,,„„,(„.., The, 417 



REVIEWS AND OCR BOOKSHELF. 

 Agrienlture and Hortionlture : 



Arnold (J. H.), Farm .Management, 659 



Brenchley (Dr. Winifred E.), Weeds of Farm Land, 496 



Collins (S. H.), Chemical Fertilisers and Parasiticides, 



206 

 Harshberger (Prof. J. W.), Tcxtlx)ok of Pastoral and 



.Agricultural Botany : For the Study of the Injurious 



and Useful Plants of Countrv and Fami, 595 

 Htibbard (Prof. H. V.), and T. Kimball, Landscape 



.Architecture, 724 

 Long (Prof. J.), The Small Farm and its Management, 



659 



Newland (H. O.), The Planting, Cultivation, and Ex- 

 pression of Coconuts, Kernels, Cacao, and Edible 

 Vegetable Oils and Seeds of Commerce, 564 



Plumb (Prof. C, S.), Types and Breeds of Farm Animals. 

 Revised edition, 659 



Soskin (Dr. S. E.), Small Holding and Irrigation : The 

 New Form of Settlement in Palestine, 434 



Walker-Tisdale (C. W.), Milk Testing: A Simple 

 Practical Handbook for Dairy Farmers, Estate Agents, 

 Creamery Managers, Milk Distributors, and Con- 

 sumers. .Second edition, 436 



Anthropology and Arehaology : 



British School at Athens, The .Annual of the. No. xxiii. 

 Session 1918-19, .S35 



Clodd (E.), Mngic in Names and in other Things, 691 



McDougall (Dr. W.), Anthropology and History : Being 

 the Twenty-second Robert Boyle Lecture, delivered 

 before the Oxford University Junior Scientific Club 

 on June 9, 1920, 307 



Morley (Dr. S. G.), The Inscriptions at Copan, 656 



Nordenskiold (E.), An Ethno-geographical Analysis of 

 the Material Culture of Two Indian Tribes in the 

 Gran Chaco ; The Changes in the Material Culture of 

 Two Indian Tribes under the Influence of New Sur- 

 roundings, 370 



Smith (Rev. E. W.). and Capt. A. M. Dale, The Tla- 

 speaking Peoples of Northern Rhodesia, 2 vols., 410 



Woolley (C. L.), De.id Towns and Living Men : Being 

 P.iges from an .Antiqu;iry's Notebook, jo8 



Biology : 



.Abel (Prof. O.), Die Stiinmic dcr Wirbeltiere, 274 



.Arber (Dr. .Agnes), Water Plants : A Study of Aquatic 

 .Angiospi-rms, 462 



BalfourBrowne (F.), Keys to the Orders of Insects 78 



Bates (11. W.), .ibridged and edited for schools by Dr. 

 F. A. Bruton, A Naturalist on the Amazons, 106 



Boulcnger (Dr. G. .A.), .Monograph of the Lacertidte, 

 vol. i,, 403 



British Museum (Natural History). British Antarctic 

 (Terra Nova) E)i|K'dition, 1910. Natural History 

 Report, Zoology, vol. xi.. No. 9. Mollusca, part iii., 

 by Anne L, Massey. No, 10, Mollusca, part iv., by 

 R. H. Burnc. Vol. iv., No. 3, Echinodcrma, part xi,, 

 and Enteropneusta, by Prof. E. W. MacBride, 398 



Clements (Dr. F. E,), Plant Indicators : The Relation of 

 Plant Communities to Process and Practice, 304 



Cockerell (Prof. T. D. A.), Zdology : A Tcxl-boolc for 

 Colleges and Universities, J29 



Coltm,in-Rogcrs (C), Conifers and their Characteristics, 

 563 



Comstock (Prof. J. ID. An Introduction to Entomology, 

 part i., second i-dition, 340 



Darwin (Sir Francis), Springtime and other Essays. 171 



Ealand (C. A.), .Animal Ingenuity of To-day, 6«>o ; The 

 Romance of the Microscope, 627 



l^asl (Dr. E. .M.) and Dr. D. F. Jones, Inbreeding and 

 Outbreeding: Their (ienctic and Sociological Signific- 

 ance, 335 



Fabrc (J. H.), translated by A. T, dc Mattes, The Glow, 

 worm and other Beetles, 463 



Fitxsimons fF. VV.), Thi- Natural Historv of South Africa. 

 Mnmm.ils. In 4 V"U. \'<ils iii. nnil iv., 600 



