Nature, T 



September 20, 



Index 



xxxvii 



A. Gautier, 440 ; Conditions and Plant Growth, Dr. 

 E. J. Russell. Third edition; G. W. Robinson, 444; 

 Disinfection of the, M. Miege, 119 



Soils, Mechanical Culture of, M. Tisserand, 139 



Solar : Constant and the Associated Problems, Value of the. 

 Dr. Knott, 73 ; .Meteorolt^y and the, 73 ; Eclipse, Total, 

 of May 29, 1919, Possible Observing Stations for the, 

 171 ; Lines, Displacements of. Dr. Royds, 234 ; Motion, 

 Relation of the .Apex of, to Proper Motion, C. D. 

 Perrine, 160 ; Physics Observatory, Cambridge, Report 

 of the, 354; Prominences, 1916, G. J. Newbegin, 

 259 ; J. and .Mrs. Evershed, 432 ; in Relation to .Sun- 

 spots, Dr. O. J. Lee, 332 ; Rotation Measures, Effect of 

 Haze on, St. John and .\dams, 32 



Somme, Vallev of the : The Deposits of the Historic Period 

 Superposed on the Neolithic Tufa of the, V. Commont, 

 7q ; The Tufas of the, V. Commont, 99 



Sound : Mental .\spect of, 462 ; The Psychology of. Dr. 

 H. J. Watt, 462 ; -Wave Produced by Gunfire to Great 

 Distances, Propagation of the, G. Bigourdan, 519; 

 -Waves of the East London Explosion, Dr. C. Davison. 



450 



South : -African .Association, .Arrangements for the Session 

 of the, 268 ; Flowering Plants, Distribution of the 

 Genera of, S. Schonland, 360 ; .Australia, Manufacture 

 of Cream of Tartar in, Dr. Hargreaves, 171 ; .Australian 

 Metallurgical Report, J. D. Connor, iii ; -Eastern 

 Agricultural College, Organisation of a Research and 

 .Advisory Department of the, 138 ; Union of Scientific 

 Societies, Forthcoming Congress of the, 51 ; Annual 

 Congress of the, 129 ; .Arrangements for the .Annual 

 Congress of the, 248 ; .Annual Congress of the, 354 ; 

 Sir D. Morris elected President of the, 355 ; Georgia, 

 Prof. J. W. Gregory, 272 ; Slav Customs as seen in 

 Serbian Ballads and Tales, Miss M. E. Durham, 158; 

 Wales Coalfield, Carboniferous Limestone Series on the 

 South-Eastern Margin of the, F. Dixey and Dr. T. F. 

 Sibly, 159 



Southern Magnitude Distribution, The, Prof. R. .A. Samp- 

 son, 339 



Soya as a French Foodstuff, M. Balland, 99 



Space, The Temperature of. Prof. Fabry, 394 



Spalling of .Magnesite Bricks, Dr. J. W. .M«Jlor, 70 



Sparidfe and Labridae, Structure, etc., of the Tubular 

 Enamel of the. Dr. J. H. Mummery, 19 



Sparking at a Rapid Make-and-Break, .A Method of Pre- 

 venting, Dr. A. Griffiths, 358 



Sparrow-Hawk, Home-life of the, J. H. Owen, 39 



Sparteine, Solubility of, .An .Anomaly in the. A. Valeur, 319 



Sparrows, House-, The Destruction of. Dr. W. E. Collinge, 

 347 



-Spectra : Index of, Appendix x.. Dr. M. Watts, 492 ; of Sun 

 and Stars, .Absorption Bands of .Atmospheric Ozone in 

 the. Prof. .A. Fowler and the Hon. R. J. Strutt, 379 



Spectral Series, .A General Formula for, J. Ishiwara, 151 



Spectroscopy, Recent Progress in. Prof. E. P. Lewis, 115, 

 134 



Spectrum : of O.xygen, The Third Line, Prof. A. Fowler and 

 J. Brooksbank, 159 ; Sensation Curve, The Fourth 

 Colourless Sensation in the, when Measured in the 

 Centre of the Retina, Sir W. Abnev, 178 



Speech, the .Mechanism of, .Analysis of,' D. Jones, 285 



Spencer, Herbert, H. Elliot, 163' 



Spiral Nebulae : Radial A'elocities of. Dr. V. .M. Slipher, 

 .S32 ; The Probem of. Dr. Crommelin, 234 



Spitzbergen : .A Geological Expedition to, E. Andersson and 

 others, 450 ; and Franz-Joseph Land, The Basaltic 

 Rocks of, .A. Holmes and Dr. H. F. Harwood, 97 



Sponges Collected off the Coast 0/ Ireland, Miss J. Stephens, 

 .399 



Squirrel, American Grey, Results of Introduction into Rich- 

 mond Park, Sir F. Treves, 31 



Stability, .Apparatus for Interpreting, T. Graham, 113 



Standardisation as .Applied to the Machinery for Cargo- 

 boats, D. B. Morison, 113 



Stanford's : Half-inch Map of the Battle Front in France 

 and Flanders : Ostend, Zeebrugge, Bruges, 523 ; Large- 

 Scale War Map, No. 17, 171 



Star Clusters: Magnitudes in, iv., H. Shapley, 160; v., vi.. 

 H. Shapley, 370 ; Possible Origin of, E. Belot, 159 ; 

 Determination of, F. H. Scares, 16 



Star : Discovery of a New, by Mr. Ritchey, Prof. Pickering, 



472 ; .Maps for 1917, Monthly, Dr. Blaikie, 93 

 Stars: B.D., .Missing, Rev. J. G. Hagen, 159; Distribution 

 of, with Respect to the Galactic Plane, F. H. Seares, 

 219; Double, A New^ Catakigue of, R. Jonckheere, 193; 

 Micrometrical Measures of. Rev. T. E. R. Phillips, 

 339; Effective Temperatures of. Dr. Wilsing 315; 

 Giant, Convection and Diffusion Within, Dr. S. Chap- 

 man, 258 ; Helium, The Classification of. Prof. A. 

 Fowler, 25; Origin of Ptolemy's Catalogue of. Dr. 

 J. L. E. Dreyer, 258; Proper .Vlotions of. New Deter- 

 minations of, Dr. .A. C. D. Crommelin, 175 ; Standard 

 Polar, Colour of the. Determined by the Method of 

 Exposure-ratios, F. H. Seares, 160 ; Thermal Diffusion 

 and the. Dr. S. Chapman, 259 ; Two Eclipsing Variable, 

 R. S. Dugan, 252; of Type O, Distribution of. O. 

 Gyllenbcrg, 203 ; Radiative Equilibrium of the. Prof. 

 .A. S. Eddington, 339 ; The Radiation of the. Prof. .A. S. 

 Eddington. 308 : J. H. Jeans ; Prof. A. S. Eddington. 365 



Statesman's Vear-Book, 1917, Edited by Dr. J. Scott 

 Keltie, .Assisted by Dr. M. Epstein, 423 



Steel : and its Heat Treatment, D. K. Bullens. Second 

 impression, 381 ; Change in Volume Produced by 

 Hardening, 192 ; Mild, Inner Structure of. Prof. W. E. 

 Dalby, 113 ; The Tempering of, H. Le Chatelier, 519 



Stellar : Nlotions and .Absolute Magnitudes, W. S. Adams 

 and G. Stromberg, 472 ; Spectra of Class R., 172 



Stirling's, Lord Justice, Herbarium presented to the Tun- 

 bridge Wells Natural History Society, 248 



Stone Monuments, Rude, in Cork County, J. P. Condon, 71 



Stonyhurst College Observatory Report, Father Sidgreaves, 

 252 



Stoke-on-Trent Central School of Science and Technology, 

 Dr. .A. W. Ashton appointed Principal of the Mechanical 

 and Electrical Engineering Department of the, 499 



Strata, Correlation of, on the Basis of Palaeogeography, 

 Prof. C. Schubert, 352 



Stress : EXetermination in a Flat Plate, J. Montgomerie, 113 ; 

 The Specification of, part v., R. F. Gwyther, 279 



Stringfellow, John, Photographs and Papers in Memory of, 

 J. Gillingham, 51 



Stromatoptcris moniUformis, .Anatomy and .Affinity of, J. 

 McLean Thompson, 99 



Submergence and Glacial Climate-s during the .Accumulation 

 of the Cambridgeshire Pleistocene Deposits, Dr. Marr, 



78 

 Subsidence Resulting from Mining, Dr. L. E. \oung and 



Prof. H. H. Stock, 33 

 Sugar : and the Tinned Fruit Industry, 162 ; at Gunthorpes 



Factory, .Antigua, The Recovery of. Sir F. Watts, 392 ; 



Home-grown, 266; The High' Price of, and How to 



Reduce it, H. Smith, 14 

 Sugars, .Aldehydic, Estimating, J. Bougault. 440 

 Sulphur : Dioxide, Adsorption of, by Charcoal, .A. .M. 



'Williams, 99; in Petroleum Oils, Dr. F. M. Perkin, 112 

 Sulphuric .Acid and .Alkali, The Manufacture of. with the 



Collateral Branches. Fourth edition. Supplement to 



vol. i.. Sulphuric and Nitric Acid, 381 

 Summer Time : The Introduction of, 89 ; Act, 1916, Report 



of Committee on the, 29 

 Sun : Observations of the, made at Lyons Obser\atory, 



J. Guillaume, 119; During the First Quarter of 1917, 



J. Guillaume, 520: -spot Zones, The, H. .Arctowski, 72 ; 



-spots and Magnetic Storms, Heliographic Positions of 



the, H. .Arctowski, 39 ; in High Southern Latitudes. 



Mrs. E. W. Maunder, 339 : Permanent Periodicity in. 



Sir J. Larmor and N. Vamaga, 258 

 Sun's Rotation, Elements of the, T. Epstein, 493 

 Sydney, Technological Museums, Report of the, 260 

 Sylow Factor Table, .A, of the First Twelve Thousand 



Numbers, H. W. Stager, 164 

 Synchronous Signalling, Prof. J. Joly, 3S4 

 Synthetic Colour Industry, The British, in War Time, C. M. 



Whitaker ; Prof. G. T. Morgan, 494 



Talbot's Observations on Fused Nitre, Prof. .A. W. C. 



Menzies, 85 

 Talgai, The Fossil Human Skull found at, S. A. Smith, 38 

 Tarred Felt Discs for Protecting Cabbages and Cauliflowers, 



J. T. Wadsworth, 171 



