z] Title Index ger ea 

Forecasting Weather, An Introduction to, P. R. Zealley, 12 
Forest, The Murmur of the, and the Roar of the Mountain, 
Prof. W. J. Humphreys, 481 
Formaldehyde, The Influence of, on the Higher Plants, 
E. and G, Nicolas, 103 
Formalism and Mysticism, Prof. H. Wildon Carr, 246 
Formosa, Among the Head-hunters of, Janet B. Mont- 
gomery McGovern, 284 
Forrest, James, lecture, Sir Richard Glazebrook, 709 
Fossil: Coniferous Genus Pitys, W. T. Gordon, 726; 
Mammals from Bolivia, 699 
Fossilised Human Skull in Santa Cruz, Discovery of a, 
Dr. Wolf, 336 
Fossils as Age-markers in Geology, The, G. McC. Price, 854 
Foulerton: professor, Prof. E. H. Starling appointed, 196 ; 
research studentship, Dr. H. W. C. Vines appointed 
to a, 196 
Fountain of Youth, The (Silver Spring), E. Imbeaux, 103 
Fourier-Bessel Function, The, Sir G. Greenhill, 422 
Franken und Westgoten in der Volkerwanderungszeit, Die, 
Dr. N. Aberg, 454 
Franklin Institute: presentation of the Howard N. Potts 
gold medal to Dr. A. W. Hull and the Edward Long- 
streth medal to the Société Genevoise d’Instruments 
de Physique of Geneva, 751; work and awards of 
the, 440 
Free: -Air Pressure Maps for the United States, C. 
Le Roy Meisinger, 788 ; Will, The Problem of, in the 
Light of Recent Developments i in Philosophy, C. E. M. 
Joad, 346 
French Pyrenees, The Glaciations of the Valleys of the, 
and their Relations with the Fluvial Terraces, C. 
Depéret, 867 
Frog, Decerebrate and Spinal, Reflex Contractions of the 
Cruralis Muscle in the, N. B. Laughton, 274 
Fruit Trees, Investigations upon, L. N. Staniland and 
others, 823 i 
Fuel: -Oil, Burning Heavy, H. Moore, 29; Research 
Board: local committees on the survey and classifica- 
tion of coal-seams, 891; resignation by Sir George 
Beilby of the directorship of fuel research and chair- 
manship of the Board; Dr. C. H. Lander appointed 
director of fuel research and Sir Richard Threlfall 
chairman, 855 
Fuels: American, Dr. R. F. Bacon and W. A. Hamor. 
2 vols., 835; Technology of, Prof. J. W. Cobb, 835 
Fungus, Bacterial, and Allied Diseases on Crops in England 
and Wales, 1920-21, 416 
Fusarium : Experiments on Growth-rate one Cultural 
Factors of the same Species of, W. Brown, 274; The 
Systematic Characters of Closely Allied Strains of, 
A. S. Horne, 274 
Galvanometer, A New Moving-coil, of Rapid Indication, 
Wir JEL. ‘Moll, 622 
Gamma Rays of the Radium and Thorium Family studied 
by their Photo-electric Effect, de Broglie and J. 
Cabrera, 275 
Ganges, Fauna of the, The Marine Element in the, Dr. N. 
Annandale, 893 
Gas: A Non-Uniform Rarefied, Free Paths in, J. E. 
Jones, 310; Coke Oven, The Application of, to the 
Synthesis of Ammonia, G, Claude, 310 ; oe 
Poisoning by, 293; Industry, The, J. Sa es 
Thomas, 350; Ionisation and Recast “Potentials, 
Prof. W. A. Noyes, 482; Manufacture, Distribution 
and Use: Teachers’ Notes for Lessons, with Black- 
board Illustrations. Second edition, 250; Process, 
Early History of the, D. Brownlie, 512 ; The Distribu- 
tion of, W. Hole. Fourth edition, 350; Under- 
takings: The Administration and Finance of, with 
special reference to the Gas Regulation Act, 1920, 
G. Evetts, 350 
Gaseous : Combustion at High Pressures, Pt. III., Prof. 
W. A. Bone, D. M. Newitt, and D. T. A. Townend, 
622; Mixtures: Explosions of, A Study of, Prof. 
A. P. Kratz and C. Z. Rosencrans, 545 ; The Pressures 
of, Dr. I. Masson and L. G. F. Dolley, 622 ; Viscosity 
measured by the Interferometer U-tube, Dr. C. 
Barus, 763 

Gases: Adsorption of, by Solids and the Thickness of the 
Adsorbed Layer, M. H. Evans and H. J. George, 206 ; 
A New Equation of State for, A. Leduc, 691 
Gasoline in the United States, 720 
Gasterosteus acuteatus, The Comparative Toxicity of 
Various Acids for Fishes, Mlle. F. Gueylard and M. 
Duval, 35 
Gastrioceras, The Occurrence of, at the Irwin River 
Coalfield, W.A., and a Comparison with the So-called 
Paralegoceras from Letti, D.E.I., W. S. Dun and Sir 
Edgeworth David, 311 
Gasworks : Chemistry, Modern, Dr. G. Weyman, 350; 
Recorders: Their Construction and Use, Dr. L. A. 
Levy, 350 
Gaumont Loud-speaking Telephone, The, L. Gaumont, 96 
Geber, The Identity of, E. J. Holmyard, 191; Prof. J. R 
Partington, 219 
Gelatin: The Action of, upon Concentration Cells, R. 
Audubert, 520; and Glue, The Chemistry and 
Technology of, Dr. R. H. Bogue, 456 
Gelatine Films, Amount of the Displacement in, shown by 
Precise Measurements of Stellar Photographs, Cc. 
Davidson, 169 
Gels: Diffusion in, The Indicator Method for the Deter- 
mination of Coefficients of, with special reference to 
the Diffusion of Chlorides, W. Stiles, 419; The 
Nature of, Dr. S. C. Bradford, 200 
General Electric Co., Cleveland, Ohio: Abstract Bulletin 
of the Research Laboratory of the Lamp Works, 545 ; 
London, Research Laboratories, Official Opening of 
the, 298 
Genetics, Biometry,and, Prof. R. Pearl and others, 513 
Geneva University, honorary doctorates conferred on 
Prof. A. C. Seward and D. W. Freshfield, 828 
Genoa University, Dr. R. Issel appointed professor of 
zoology in, 205 
Geodesy, Institute of, in Finland, Report of the, 820 
Geodetic Levelling, 7 
Geographical Factors, The Influence of, on the Agri- : 
cultural Activities of a Population, Sir John Russell, 64 
Geography: Business, E. Huntington and Prof. F. E. 
Williams, with the co-operation of Prof. R. M. 
Brown and L. E. Chase, 531; Commercial, Hand- 
book of, G. G. Chisholm. New edition, 77; The 
Pupils’ Class-book of, the Americas, E. J. Si Lay, 427; 
in Business Life, Prof. Tower, 64; in Education, 64 ; 
Test, A, in Secondary Schools, E. J. Bradford, 65 
Geological : Society, awards of the, 93; election of officers 
and council of the, 407; election of foreign members 
and foreign correspondents, 716; Survey of Great 
Britain, Summary of Progress of the, and the Museum 
of Practical Geology for 1921, with Report of the 
Geological Survey Board and Report of the Director, 
66. 
Geologie in Tabellen fiir Studierende der Geologie, 
Mineralogie, und des Bergfachs, der Geographie und 
der Landwirtschaft, Prof. K. Andrée. Erster, 
Zweiter und Dritter Teil, 630 
Geologische Rundschau, the, 822 
Geology: C. I. Gardiner, 876; Astronomy and, The 
Borderland of, Prof. A. S. Eddington, 18; Engineer- 
ing, Elements of, Profs. H. Ries and T. L. Watson, 
732; Physical Science on, The Bearing of Some 
Recent Advances in, Prof. J. Joly, 726; and the 
Ice-cap in Northern Greenland, 512 ; in War, 873; of 
the London District, The, H. B. Woodward. Second 
edition, revised, by C. E. N. Bromehead ; with Notes 
on the Paleontology by C. P. Chatwin, 251; of the 
Schists of the Schichallion District of Perthshire, 
The, E. M. Anderson, 485 
Geology’s Debt to the Mineral Industry, Dr. W. G. Miller, — 
482 
Géometrie non-Euclidienne, Introduction a la, Dr. A. 
MacLeod, 11 
Geometry : Elementary, The Teaching of, 271 ; Postula- 
tional, and Physics, Prof. O. Veblen, 482; School, 
Sequence in, 277 
Geophysics, Antarctic, 897 
Geophysik, Zeitschrift fiir angewandte. Unter standiger 
Mitarbeit zahlreicher Fachgenossen. Herausgegeben 
von Dr. R. Ambronn, Vol. I., Part I., 145 
