Supplement to Naturc,~\ 

 November 26, 1 891 J 



Index 



XVI I 



J7 ; the Yoruba Country, West Africa, Alvan Millson, 209 ; 

 i Journey in Gazaland, South- East Africa, Denis Doyle, 209 ; 

 )fs that Asia and America have been Recently Connected, 

 tmile Blanchard, 335 ; the International Geographical Con- 

 ess at Berne, 355 ; Prince of Monaco's New Yacht for 

 tudy of the Sea, 359 ; the Field of Geography, E. G. 

 ivenstein, 423 ; Exploration of Greenland, 436 ; the 

 funivak Islanders, Ivan Petroflf, 477 ; Mrs. French Sheldon 

 East Africa, 508 ; Dr. Robert Felkin on Acclimatization, 

 Colonel Holdich on the Application of Indian Geo- 

 iphical Survey Methods to Africa, 508 ; H. T. Crook 

 our Ordnance Survey, 508 ; J. Scott Keltie on Geo- 

 iphical Education, 509 ; Russian Geographical Society's 

 ledal Awards, 598 ; Mr. Joseph Thomson's Explorations in 

 South Africa, 598 ; Prof. Russell's Excursion to Alaska, 629 

 Blogy: the Crystalline Rocks of the Lizard District, Prof. 

 G. Bonney, F.R.S., and General C. A. McMahon, 22 ; 

 ^logical Society, 22, 94, 143, 191, 240; Aids in Practical 

 Bology, Prof. Grenville A. J. Cole, Prof. A. H. Green, 

 f.R. S., 25 ; an Introduction to the Study of Petrology, Dr. 

 ierick H. Hatch, Prof. A. H. Green, F.R.S., 25; the 

 tin Resources of Tenasserim, 40 ; Notice of Mathurin 

 jussault, 68 ; the Eocene and Oligocene Beds of the Paris 

 in, 88 ; Rha?tic Section at Pylle Hill, Bristol, E. Wilson, 

 a Microscopic Study of the Inferior Oolite of the 

 jtteswold Hills, Edward Wethered, 95 ; Geology and 

 lysical Geography of North Syria, Prof. Edward Hull, 

 ,R.S., 99; Geologie, Priucipes, H. Hermite, 102; Geo- 

 jical Survey of Canada, 1 14 ; Relative Age of Quaternary 

 tratum of Mont Dol, M. Sirodot, 1 19 ; Lower Jaws of 

 coptodon, R. Lydekker, 143 ; Recently Exposed Sections 

 Glacial Deposits at Hendon, H. Hicks, F.R.S., 143; 

 diffusion of Three Distinct Forms of Titanium Oxide in 

 Jretaceous Strata of Northern France, Dr. B. Roozeboom, 

 Geologists' Association, a Record of Excursions made 

 •tween i860 and 1890, edited by Thomas Vincent Holmes 

 id C. Davies Sherborn, 149 ; Parka dccipiens, 165 ; 

 Jeology of the Country around Liverpool, G. H. Morton, 

 'rof. W. Boyd Dawkins, F.R.S., 172 ; a Geological Excursion 

 America, S. F. Emmons, 182 ; the International Geo- 

 jical Excursion in America, 629 ; Captain Dutton and Geo- 

 »y in America, 183 ; Post-glacial History of Hudson River 

 Talley, F. J. H. Merrill, 189 ; Post-Tertiary Marine Deposits 

 South Coast of England, Alfred Bell, 191; the Glacial 

 £poch Relics at Kelley Island, Ohio, 207 ; Traces of an 

 Inter-glacial Period in Middle Russia, N. Krischtafovitch, 

 232 ; Wells in West Suffolk Boulder-Clay, Rev. Edwin Hill, 

 240 ; Inverness Earthquakes of 1890, C. Davison, 240 ; the 

 Eocene Formation of Algeria, MM. Pomel and Ficheur, 264 ; 

 Geological Map of Monte Somma and Vesuvius, II. J. 

 Johnston-Lavis, 271 ; the Fossil Echinoidea of Malta, and 

 their Evidence on the Correlation of the Maltese Rocks, 

 J. W. Gregory, 311 ; ITand-book of the London Geological 

 Field Class, 317 ; Probable Role of Gases in various Geo- 

 logical Phenomena, M. Daubrc'e, 360 ; Death of Prof. Martin 

 Duncan, F.R.S., 387 ; Pleistocene Fluvial Planes of Western 

 Pennsylvania, Frank Leverett, 463 ; on the Relations of the 

 < !hemung and Catskill on the Eastern Side of the Appalachian 

 liasin, Prof. J. J. Stevenson, 471 ; a Preliminary Report of 

 Observations at the Deep Well, Wheeling, W.Va., William 

 Ilallock, 472 ; Prof. Boyd Dawkins, F.K.S., on the Chan- 

 nel Tunnel Boring and the Discovery of Coal, 469 ; W. 

 Topley, F.R.S., on the Origin of Petroleum, 479; Sir 

 Archibald Geikie, F.R.S., on the Discovery of the Olenellus 

 Zone in the North-West Highlands of Scotland, 479 ; Sir 

 Archibald Geikie, F.R.S., on the Recent Work of the Geo- 

 logical Survey in the Archaean Gneiss of the North-West 

 Highlands of Scotland, 480 ; Sir R. S. Ball on the Cause 

 of an Ice Age, 480 ; Rev. Dr. Crosskey on the Distribution 

 f Erratics in England and Wales, 480 ; Prof. Wright 

 n the Ice Age in North America, 480 ; Report on the 

 Llbolton Cave near Skipton, 480 ; Dr. Hicks on the Silurian 

 and Devonian Rocks of Pembrokeshire, 480 ; Palceonto- 

 logical Papers, 481 ; the International Geological Congress- 

 Washington Meeting, 504 ; Prof. Joseph Le Conte, 504 ; 

 Prof. T. C. Chamberlin, Prof. T. McK. Hughes, and Mr. 

 McGec on Classification of the Glacial Deposits, 504 ; Mr. 

 Gdbert on the Correlation of Geological Formations, 505 ; 

 I'rof. E. W. Hilgard on the Importance of the Abundance or 

 Scarcity of Species in the Correlation of Strata, 506 ; Major 

 J. W. Powell on Map-colouring and Cartography, 506 . 



Antiquity of the La.st Glacial Period, N. S. Shaler, 529 ; 

 Geological Formations exposed in Bridgwater Railway 

 Cuttings through Polden Hills, J. F. M. Clarke, 530 ; 

 the Ice Age in North America, G. F. Wright, Prof. 

 T, G. Bonney, F.R.S., 537; South Italian Volcanoes, 

 Dr. Johnston-Lavis, 539 ; the Rapakiwi, J. J. Sederholm, 

 548 ; Geology of the Maltese Islands, J. H. Cooke, 550 ; 

 Geological Society of America, 601 ; Obituary Notice of 

 Prof. Alexander Winchell, 601 ; Sur I'Existence du Dino- 

 therium en Roumanie, Prof. Gregoire Stefanescu, 602 ; 

 Systematic List of Frederick E. Edwards Collection of 

 British Oligocene and Eocene Mollusca in the British 

 Museum (Natural History), Richard Bullen Newton, 610 ; 

 Memorials of John Gunn, being some Account of the 

 Cromer Forest Bed and its Fossil Mammalia, 612 

 Geometry of Conies, Dr. Taylor's Elementary, 517 

 Geometry of Position, R. II. Graham, Alex. Larmor, 195 

 Gerard (Rev. John, S. J.), Science or Romance, Prof. R. Meldola, 



F.R.S., 441 

 German Naval Observatory, Hamburg, Catalogue of the 



Library of, 318 

 German Ornithological Society, Annual Meeting, 39 

 German Society for the Encouragement of Industry, Prises, 66 

 Germany, the Heavy November Rains and Floods in, Prof. 



Hellmann, 206 

 Gernez (D.), Application of Measure of Rotatory Power to 

 Determination of Compounds of Aqueous Solutions of 

 Mannite with Acid Molybdates of Soda and Ammonium, 

 192 

 Ghizeh Museum, Mummies, Papyri, &c., at, 66 

 Gibbins (H. de B.), the History of Commerce in England, 222 

 Gibbs (Prof. J. Willard), Quaternions and the Ausdehnungs- 



lehre, 79 

 Gibert (Dr.), on Diphtheria, 369 

 Giglioli (Dr. Italo), Rain-Making, 590 

 Gilbert (Mr.), Correlation of Geological Formations, 505 

 Gilchrist (Percy G.), Proposed Fellow of the Royal Society, 15 

 Gill (C. Haughton), on Diatoms, 23 

 Gill (Dr. David, F.R.S.), an Astronomer's Work in a Modern 



Observatory, 603 

 Giraffe and its Allies, 524 

 Girls, the Technical Education of, 185 

 Glacial Epoch, Relics at Kelley Island, Ohio, 207 

 Glacial Period, Antiquity of the Last, N. S. Shaler, 529 

 Glacial Pleistocene Deposits, Classification of the, Prof. T. C. 

 Chamberlin, 504 ; Prof. T. McK. Hughes, 504 ; Mr, McGee, 



504 

 Glaciers discovered in Caucasus, New, 452 

 Glaciers, Snow-slips of the Kazbek, Dr. Woeikof, 600 

 Glaciers, the Variation of Alpine, 389 

 Gladstone (Dr. J. H., F.R.S.), Molecalar Refraction and 



Dispersion of Various Substances in Solution, 215 

 Glazebrook (R. T., F.R.S.). on the Resistance of some Mercury 



Standards, 94 

 Gmelinite from Nova Scotia, L. V. Pirsson, 310 

 Goff (VV.), Sun's Radiation of Heat, 468 

 Goldsmiths' Company's New Cross Technical and Recreative 



Institute, Opening of, 280 

 Golf, some Points in the Physics of, Prof. P. G. Tait, 497 

 Goodale (Prof. Geo. L.), some of the Possibilities of Economic 



Botany, 469, 530 

 Gordon (W. J.), our Country's Flowers, 247 

 Goss (IL), Scoria dea/ba/a, 488 



Gottingen, Royal Academy of Sciences, 66, 120, 264, 560 

 Gotch (Dr. Francis), appointed Professor of Physiology at 



University College, Liverpool, 257 

 Goundry (J. W.), on an Instrument forgiving Enharmonic In- 

 tervals in all Keys, 19 

 Graff (Dr. Ludwig von). Die Organisation der Turbellaria 



Acoela, Prof. E. Ray Lankester, F.R.S., 465 

 Graham (R. H.), Geometry of Position, Alex. Larmor, 195 

 Graham-Kerr's (Mr. J.), Pilcomayo Expedition, 135 

 Gramont (A. de), Artificial Production of Datolite, 288 

 Grandmougin (Dr.), New Method of Preparing Azoimide, 600 

 Grapes, Oranges, &c., the Cultivation of, in Greece and 



Australia, 630 

 Graphical Statics, by Luigi Cremona, translated by Prcf. 



Thomas Hudson 15eare, 221 

 Gratzl (Lieutenant), the Mareograph in Pola and Trieste 



Harbours, 600 

 Gravitation Constant, and Mean Density of Earth, Deter- 



