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Ear-trumpets, the Value of the Horns in Bighorn Wild Sheep 

 as, George Wherry, 127 



Earth Currents Derived from Distributing Systems, on, E. B. 

 Wedmore, 303 



Earth, the Face of the, Eduard Suess, 145 



Earlh's Beginning, the. Sir Robert S. Ball, F.R.S., 294 



Earthquake Observations in Strassburg, Prof. John Milne, 

 F.R.S.,43S 



Earthquake Shocks of April and May, 1901, near Rome, Dr. 

 Cancani, 422 



Earthquake in Transcaucasia, 370 



Ebony, Green, the Colouring Matters of, A. G. Perkin and 

 S. H. C. Briggs, 310 



Echidna, Die Medulla Oblongata und die \'ierhugelgegend von 

 Ornithorhynchus und, A. Koelliker, I 



Eclipses: the Total Solar Eclipse of September 9, 1904, Dr. 

 A M. W. Downing, F. R. S , 30 ; the Annular Eclipse of the 

 Sun, November 10, 1901, 62 ; Observations in Lower Egypt 

 of the Annular Eclipse of the Sun of November 11, 1901, 

 A. de la Baume-Pluvinel, 215, 232; Magnetic Observations 

 during Total Solar Eclipse, 210; the Total Solar Eclipse, 

 May iS, 1901, 210, 2S3 ; Results of International Magnetic 

 Observations made during the Total Solar Eclipse of May 

 17-iS, 1901, Dr. I^. A. Bauer, 246; Magnetic Observations 

 during Total Solar Eclipse of May 18, 1901, Dr. W. van 

 Hemmelen, 305 ; Simultaneous Visibility of Sun and 

 Total Lunar Eclipse, Dr. C. JiiHebrand, 305 ; Origin of 

 Disturbance in Corona, May 17-18, 1901, 499 ; Total Eclipse 

 of the Moon on April 22, 574 



Ecuador : Discoveries in La Plata Islands, Dr. G. A. Dorsey, 

 231 



Edinburgh Royal Society, 94, 143, 334, 407, 479, 550 



Edridge-Green (Dr.), on Colour- Vision, 114 



Edser (E.), Optical Eflect produced by Refraction of Air, 497 



Education ; School Board Exhibition of .Scientific Apparatus, 

 21 ; Research in University Education, Prof. J. Macgregor, 

 F.R.S., 69 ; Scope and Functions of Museums, Address at 

 Ipswich Museum, Prof. E. Ray Lankester, F.RiS., 91 ; 

 Technical Schools for Rural Districts, 106 ; A Country 

 Reader for Use in Village Schools, H. B. ^L Buchanan, 

 126; Meteorological Work for Science Schools, J V. II. 



. Coates, 128; W. X. Shaw, F. R.S., 128; Foreign "Competi- 

 tion and Technical Education, Arthur G. Green, 156; 

 Chemical Instruction and Chemical Industries in Germany, 

 Dr. F. MoUwo Perkin, 174; Elementary Medical Education, 

 203 ; Death of H. G. Madan, 206 ; The Teaching of 

 Mathematics, 258 ; C. J. Forth, 272 ; J. \V. Marshall, 297 ; 

 John S. Veo, 318; IW. John Perry, F.R.S.. 484; C, S. 

 Jackson, 55S ; Frank L. Ward, 558 ; British Association 

 Meeting at Glasgow, 1901 : Discussion of the Teaching of 

 Mathematics which took place on September 14 at a Joint 

 Meeting of Two Sections, .Section A, Mathematics and 



. Physics, Section L. , Education, 457; Conference of Science 

 Teachers, A. T. Simmons, 259 ; Plans of the Carnegie 

 Institution, 302 ; Fifty Vears of Work in Canada, Scientific 

 and Educational, Sir William Dawson, F.R S., 339; Intro- 

 ductory Physics for Irish Intermediate .Schools, R. A. 

 Gregory and A. T. Simmons, 343 ; Domestic Economy 

 for Scholarship and Certificate Students, Ethel R. 

 Lush, 365; The Nature-Study Journal, 369; Confer- 

 ence on School Gardens, 380 ; Experimental Geometry, 

 in Secondary Schools, C. A. Rumsey, 416 ; the Owens 

 College Jubilee, 469 ; Celebration of the Twenty-fifth Anni- 

 versary of the Johns Hopkins University, 470 ; Der Natur- 

 wissenschaftliche Unterricht in England, insbesondere in 

 Physik und Chemie, Dr. Karl T. Fischer, 48 1 ; Death and 

 Obituary Notice of Sir John Donelly, K.C. B. , 538 ; the 

 Education Bill, the Editor, 562 ; Prof. Oliver Lodge, F. R.S., 

 562 : Sir J. G. Fitch, 566 ; Prof J- Wertheimer, 568 ; Sir 

 J. G. Fitch, 5S4; Sir \V. T. Thiselton-Dyer, F.R.S., 584 ; 

 Rural Reader — Senior, V. T. Murche, 583 ; the Teacher's 

 .Manual of Object Lessons for Rtiral Schools — Senior, V. T. 

 Murche, 583 



Eggs, the Colours of Guillemots', R. J. Ussher, 5 



Egg 'flying Capacity of Fowls Fed on Meat and on Grain, 

 Comparison of the, Frederic Ploussay, 408 



Egg Sales, 593 



Eginitis (B.), Variations in Spark Spectra, 603 



Eginitis (D.), Observations of Perseids at .'\lhens, 95 ; Leonid 



■ Observations at Athens, 143 



Egypt : Berthelot and the Metals of Antiquity, Dr. J. H. 

 Gladstone, F.R.S,, 82; the Mummified Birds of Ancient 

 Egypt, MM, Lortet and Gaillard, 119; Observations in 

 Lower Egypt of the Annular Eclipse of the Sun of November 

 II, 1901, A. de la Baume-Pluvinel, 215 ; Vertebrate P'ossils 

 from Egypt, 2S7 ; Announcement of New Mammalian 

 Remains from Egypt, 494 ; Prehistoric Graves and Remains 

 at Girga to be Investigated by Dr. Elliot Smith, 571 



Egyptology : the Mechanical Triumphs of the Ancient 

 Egyptians, Commander F. M. Barber, 78 ; Kharga Oasis, its 

 Topography and Geology, f. Ball, 130; the Book of the 

 Dead, E. A. Wallis Budge, 387 ■ 



Eiffel (M. G.), La Tour Eiffel en 1900, 290 



Eitifel Tower, the, in 1900, M. G. Eiffel, 290 



Ekholm (Dr. Nils), on the Meteorological Conditions of the 

 Pleistocene Epoch, 141 - 



Elasticity for Engineers, Aug. Foppl, 505 



Electricity : Voltameter for Small Currents, Dr. R. A. 

 Lehfeldt, 46 ; Model imitating behaviour of Dielectrics, Dr. 

 Buchanan, 46 ; Prof. J. A. Fleming, 47 ; Electrolysis of 

 Ammonium Chloride in Solution in Liquefied Ammonia, 

 Plenri Moissan, 47 ; Effect of a Magnetic Field on Spectra 

 of Helium and Mercury, Prof. Andrew Gray, F.R.S., and 

 Dr. Walter Stewart, 54 ; the Hall Effect on Gases at Low 

 Pressures, H. A. Wilson, 71 ; Problems in Electrical Con- 

 vection, E. T. Walker, 71 ; Applications of Electricity to 

 - Railway Engineering, Mr. Langdon, 86 ; Wireless 

 Telegraphy and English Channel Lightships, 109 ; Kites 

 and Wireless Telegraphy. Dr. A. Lawrence Rotch, 198; 

 Marconi's Transatlantic Wireless Telegraphic Experiments, 

 228; Position and Promise of Wireless Telegraphy, 394; 

 Further Developments in Wireless Telegraphy, 416; 



, Wireless Telegraphy. G. W. de Tunzelmann, Supp. 

 November 14, 1901, x. ; Telephony Without Wires, E. 

 Ducretet, 2S7 ; a New Form of the Pernieameter for Testinij 

 the Magnetic (Jualiiies of Iron and Steel in Bulk. C. V. 

 Drysdale, no; Experimental Demonstration on the Pressure 

 of Light, Prof. Lebedew, no; on the Electrolytic Preparation 

 of the Halogen Derivatives of Acetone, A. Richard, 119; 

 the " Armorl " Electro-capillary Relay, 129; New form of 



, Stereoscopic Fluoroscope, E. W. Caldwell, 135; the Spark 

 of the Hertz Exciter, C. Tissot, 143 ; Ueber die Entdeckung 

 der elektrischen Wellen durch H. Hertz und die weitere 

 Entwicklung dieses Gebietes, 211 ; Hertzian Waves Emanat- 

 ing from the Sun, Charles Nordman, 359 ; Transparency of 

 Liquid Conductors for Hertzian Oscillations, Charles Nord- 

 mann, 407 ; Explanation of Some Celestial Phenomena by 

 Means of the Hertzian Waves, Charles Nordmann, 455 ; 

 Hertzian Waves in Storms, Firmin Larroque, 528 ; Trattato 

 Elementare di Fisica, Optics and Electricity, Oresti Murani, 

 151; Exhibition of Electrical Appliances at the Roya) 

 Aquarium, 15S ; Results of Some Recent Researches on the 

 Properties of Various Rays, J. Reginald Ashworth, 180; on 

 the Electrical Conductivity of Liquefied Gases, M. Centner- 

 szwer, iSt ; the Dielectric Constant of Paraffin, W. G. 

 Wormwell, 190 ; the Negative Radiation from Hot Platinum, 

 O. W. Richardson, 191 : on the Ions Produced by an Incan- 

 descent Platinum, Prof. J. J. Thomson, 191 ; the Action ol 

 High-frequency Currents upon Animals, H. Bordier, 239 ; 

 M. Lecomte, 239 ; M. d'Arsonval, 239 ; Electrical Engineer- 

 ing Testing, G. D, Aspinall Parr, 242 ; Fusion of fjuartz by 

 Means of Electric Arc, R. S. Hutton, 263 : " Skin " Effect in 

 Electrical Oscillators, C. A. Chant, 263 ; Thermoelectricity of 

 Steels and Nickel-steels, G. Belloc, 2S8 ; on the Influence of 

 Electrical Phenomena in Cosmogony, I. Skvortzow, 303; on 

 Earth Currents Derived from Distributing Systems, E. B. 

 Wedmore, 303 ; Isenthal and Co.'s Protracted Rheostats, 

 304 ; Exhibition of Electric Automobiles in New ^'ork, 303 ; 

 Progress in the design of Accumulators for Electric Auto- 

 mobiles, Sir H. P. Maxim, 572 ; the validity of the lonisation 

 Theory, Louis Kahlenberg, 305 ; Dr. H. M. Dawson, 414 ; 

 Identity of Negative Ions Produced in Various Ways, John 

 .S. Townsend, 413 ; Influence of Diaphragms Separating 

 Anode and Kathode Solutions on the Measured Values of the 

 Transport Numbers of the Ions in the Passage of Electricity 

 Through Electrolytic Solutions, W. Hittorf, 423 ; an Italian 

 (Valtellina) Electric Railway, 30S ; Results of Trials of 

 .Secondary Batteries for Use on Branch Lines of Railways in 

 tiermany, 349 ; Electrical Traction on Railways, W. M. 

 Mordey and B. M. lenkin, 399 ; on Skin Currents, Part ii. 



