XXll 



Index 



r* Na%ure, 

 \.Fchrv.ary 2, 19^2 



211; The Duration of, Old Observations bearing on. 



Dr. W. J. Fisher, 531 

 Sunset, Duration of. Table for the, Dr. W. J. Fisher, 433 

 Terrestrial Magnetic Disturbances and Sun-spots, J. 



Evershed, 566 

 Thistledown, The Flight of, Prof. Miles Walker, 242 ; 



W. E. Lishman ; L. F. Richardson, 340 ; Prof. J. Small, 



500 

 Tin Plague and Scott's Antarctic Expedition, Prof. Alan 



W. C. Menzies, 496 

 University Relief for Central Europe and Russia, Sir 



Maurice de Bunsen, 435 

 Valency, Qualities of. Dr. R. M. Caven, 210 ; Dr. S. H. C. 



Briggs, 306 

 Visibility : Methods of Improving, A. G. Lowndes ; Capt. 



Sir D. Wilson-Barker, 337 ; of Distant Objects, A 



Method of Improving, Prof. C. V. Raman, 242 

 Vowel Sounds, The Nature of, P. Edwards; Prof. E. W. 



Scripture, 82 

 Water, Boiled and Unboiled, The Differentiation of. Dr. 



W. R. G. Atkins, 339 

 Waves in an Isotropic Solid, Propagation of, A. Mallock, 



465 

 Whispering-gallery Phenomena at St. Paul's Cathedral, 



Prof. C. V. Raman and G. A. Sutherland, 42 

 X-rays : Absorption of, W. E. Williams and B. L. Worsnop, 



308 ; Secondary, The Softening of. Prof. A. H. Compton, 



366 ; S. J. Plimpton, 402 ; Dr. J. A. Gray, 435 

 Zoological Record, The, W. L. Sclater, 436 



Cosmic Friction : A Query, Sir Oliver Lodge, 275 

 Cotton Research Board, Ministry of Agriculture, Egypt, 



First Annual Report (1920) of the, 30 

 Counsels and Ideals : From the Writings of William Osier. 



Second edition, 430 

 Countries as Personalities, Prof. H. J. Fleure (Citizens' 



Lecture in connection with the British Association), 



573 

 Countryside Rambles, W. S. Fumeaux, 207 

 Courtship, The Accessory Nature of Many Structures and 



Habits associated with, J. S. Huxley, 565 

 Crop Production, Science and, Dr. E. J. Russell (Farmers' 



Lecture of the British Association), 116 

 Cuckoo, A Kinematograph Film illustrating the, E. P. 



Chance, 415, 421 

 Cuprous Compounds, Contribution to the Knowledge of 



the, J. Errera, 230 

 Curite, A New Radio-active Mineral, A. Schoep, 555 

 Currents, Stray, Researches on, J. Chappuis and Hubert- 



Desprez, 454 

 a Cygni, The Ultra-violet Spectrum of, W. H. Wright, 547 

 Cypraeidae, The Family, E. Vredenburg, 481 



Dairy Bacteriology, Prof. Orla-Jensen, translated by P. S. 



Arup, 431 • ^ 



Dam, The Most Economical Height of a, A. D. Mead, 445 

 Danish : Arctic Station, The, Prof. A. C. Seward, 320 ; 



Deep Sea Expedition, The, Dr. J. Schmidt, 185 

 Darwin's Birthplace purchased by H.M. Office of Works, 



190 

 Death, Feigning, Habit of, among Animals, L. Bertin, 224 



DEATHS. 



Allen (Dr. J. A.), 94, 475 

 Armstrong (Prof. F. E.), 315, 346 

 Baillie-Grohman (W. A.), 475 

 Bainbridge (Prof. F. A.), 315, 344 

 Baynes (R. E.), 94 

 Bevan (E. J.), 314 

 Bourget (H.), 412 

 Boutroux (E.), 413, 441 

 Brady (Dr. G. S.). 575 

 Bruce (Dr. W. S.), 315, 345 

 Chapman (Dr. T. A.), 542 

 Cousins (Dr. J. W.), 221 



Delepine (Prof. A. S.), 379, 412 

 Dodds (J. M.), 380, 506 

 Donop (Lt.-Col. P. G. von), 413 

 Ducie (Earl of), 315 

 Fischer (L. A.), 24 

 Fox (Sir C. Douglas), 380, 412 

 Fran9ois-Franck (Prof. C), 314 

 Frazer (R. W.), 476 

 Freyer (Sir Peter J.), 94 

 Garforth (Sir William), 285 

 Godlewski (Prof. T.), 380 

 Grandidier (A.), 286 

 Halsbury (Lord), 506 

 Hann (Prof. J. von), 221, 249 

 Harley (Dr. J.), 575 

 Harrison (B.), 251 

 Hewitt (Dr. P. C), 188 

 Kennedy (Sir John), 442 

 Ladd (Prof. G. T.), 23 

 Lambert (Prof. C. J.), 413 

 La Touche (Sir James D.), 221 

 Leyton (Dr. A. S. F.), 284 

 Lindley (Lord), 506, 541 

 Lock (Rev. J. B.), 94 

 Mann (Prof. G.), 221 

 Montelius (Dr. O.), 379 

 Newland (B.), 189 

 Norman (Major G. H.), 94 

 Oertling (H. R. A.), 575 

 Pannell (J. R.), 127 

 Passmore (Dr. F. W.), 379 

 Richards (E. Windsor), 379 

 Richards (Prof. J. W.), 286 

 Ridewood (Dr. W. G.), 160 

 Roe (J. P.), 127 

 Sladen (F. W. L.), 127 

 Sloog (H.), 346 



Thompson (Prof. P.), 413, 441 

 Thomson (J.), 221 

 Walker (G. W.), 94, 188 • 

 Woodward (Dr. Henry), 93 



Decimal : Association, Resolution of the, 477 ; Svstem, 



The Arithmetic of the. Dr. J. Cusack, 174 

 Dental Decay, Appointment of a Committee on the Causes 



of, 163 

 Descent, Theory of, The Present Position of the, in 



Relation to the Early History of Plants, Dr. D. H. 



Scott (Presidential Address to the Botany Section of 



the British Association), 153 

 Devonian, The Base of the, with Special Reference to the 



Welsh Borderland, L. D. Stamp, 453 

 Dibenzoylmethane of Wislicenus, The Supposed True, 



Some New Experiments, C. Dufraisse and P. Gerald, 



4.86 

 Diet in Relation to Normal Nutrition, Dr. J. M. Hamill, 



444 



Diffraction of Plane Electromagnetic Waves by a perfectly 

 Reflecting Sphere, The, F. P. White, 421 



Dimethylcampholamide, The Reduction Products of, 

 A. Haller and Mme. P. Ramart, 357 



Direct-current : Dynamos and Motors, The Theory of, 

 J. Case, 461 ; Electrical Engineering, The Elements 

 of, H. F. Trewman and G. E. Condlifife, 431 



Dirigible Balloon in Sea-fishing, The Co-operation of the, 

 H. Heldt, 517 



Dogfishes, The Life-history of the, E. Ford, 585 



Domestic Heating and Waste of Coal and Health, 560 



Drought : of 192 1, Could the, have been Forecasted ?, 

 C. E. P. Brooks, 350 ; The Recent, The Extent of, 15 



Dunstable, The Mound-builders of. Prof. G. Elliot Smith 

 and Capt. G. Crowden, 512 



Durham University : G. S. Mockler appointed Lecturer 

 in Geology in, 71 ; College of Medicine, Dr. D. Burns 

 appointed Professor of Physiology in the, 134 



Dushman Equation, The, for the Velocity of a Mono- 

 molecular Reaction, W. E. Garner, 211 



