Nature. "1 

 June 18, 1903J 



Index 



xvii 



the Metropolitan District Railway, 518; Electrical Con- 

 ductivitv of Solutions at the Freezing Point of Water, 

 W. C. D. Whetham, F.R.S., 526; Method of Electrically- 

 Locating Ore Deposits, L. Daft and A. Williams, 565 ; 

 Electrical Conductivity Imparted to a Vacuum by Hot 

 Conductors, O. W. Richardson, : 574 ; Atmospheric Elec- 

 tricity at the Summit of Mont Blanc, G. Ie Cadet, 575 ; 

 Italian Visit of the Institution of Electrical Engineers, 

 ,S8 ; a New Form of Self-restoring Coherers, Sir Oliver 

 Lodge, F.R.S., 598; Projection of Matter Round the 

 Electric Spark, Jules Semenov, 599 ; Action of Radio- 

 active Bodies on the Electric Conductivity of Selenuim, 

 Edmund von Aubel, 599 ; Electric Convection, V. 

 Cremieu and H. Pender, 624 

 Elements, Refractivities of the, Clive Cuthbertson, 32 

 Elkin (Dr. W. L.), Stellar Parallax, 496 

 Elliot (G. F. Scott), Nature Studies (Plant Life), 486 

 Elster (Mr.), Improvement in Exner's Electroscope, 209 

 Elwes (H. J., F.R.S.), Natural History Journey in Chile, 



95 



Emanations of Radium, the, Sir William Crooks, F.R.S., 

 at Royal Society, 522 



Embleton (Miss A. L.), Cerataphis Lataniae, 454 



Embryology : Embryology of Tumours, Dr. J. Beard, 500 ; 

 Lehrbuch der Vergleichenden Entwickelungsgeschichte 

 der niederen Wirbelthiere in systematischer Reihenfolge 

 und mit Beruchsichtigung der experimentellen embryo- 

 logie bearbeitet, Prof. Heinrich Ernst Ziegler, Supp., 

 November 6, 1902, viii 



Emmerling (Dr. O.), Die Zersetzung Stickstofffreier 

 organischen Substanzen durch Bakterien, 316 



Encyclopaedia Britannica, 505 



Energy : the Waste of, from a Moving Electron, Oliver 

 Heaviside, F.R.S., 6, 32; Sir O. Lodge and the Con- 

 servation of Energy, Dr. E. W. Hobson, F.R.S., 611; 

 Die Entwickelung unserer Naturanschauung in xix. Jahr- 

 hundert und Friedrich Mohr, Ch. Jezler, Prof. R. 

 Meldola, F.R.S., Supp., Nov. 6, 1902, v 



Engineering : Presidential Address by J. C. Hawkshaw, at 

 the Institution of Civil Engineers, 12 ; the Effect of 

 Segregation on the Strength of Steel Rails, Thomas 

 Andrews, F.R.S., 13 ; the Properties of the Alloys of Iron, 

 Prof. Barrett, W. Brown and R. Hadfield, 14 ; Cavitation 

 in Screw Steamers, J. A. Bormand, 24; Utilisation of 

 the Internal Heat of the Earth, Rev. E. Rattenbury 

 Hodges, 36; Mine Ventilation, H. W. G. Halbaum, 38; 

 the Elements of Electrical Engineering, Tyson Sewell, 

 53 : Death and Obituary Notice of William H. Barlow, 

 F.K.S., 64; Der Parallelbetrieb von Wechselstrom- 

 maschinen, Dr. Gustav Benischke, 101 ; Die Grund- 

 gesetze der Wechselstromtechnik, Dr. Gustav Benischke, 

 •;So ; Le Ciment Arme et ses Applications, Marie-Auguste 

 Morel, 102 ; Les Moteurs a Explosion, G. Moreau, C. R. 

 D'Esterre, 145; Theorie des Moteurs a Gas, G. Moreau, 

 C. R. D'Esterre, 145: Some Limits in Heavy Electrical 

 Engineering, James Swinburne at Institution of Elec- 

 trical Engineers, 159 ; the Great Irrigation Dam at 

 A-suan, 184; Material of Machines, Albert W. Smith, 

 222 ; Estimates of the Stresses in the Riveted Attach- 

 ments in Ships, Dr. J. Bruhn, 278; Physico-Chemical 

 Tables, vol. I., Chemical Engineering and Physical 

 Chemistry, John Castell-Evans, 314; Hohere Analysis fur 

 Ingenieure, Dr. John Perry, Prof. A. G. Greenhill, 

 F.R.S., 338: Steel Ships, their Construction and Main- 

 tenance, a Manual for Shipbuilders, Ship Superintendents, 

 Students, and Marine Engineers, Thomas Watsor, 389 ; 

 the Design of Simple Roof Trusses in Wood and Steel, 

 M. A. Howe, 4-50 ; Stereotomy, A. W. French and H. C. 

 Ives, 439 ; Leonardo da Vinci as a Hydraulic Engineer, 

 M. A. Ronna, 440: a Text-book of Field Astronomy for 

 Engineers, G. C. Comstock, 460 ; Ancient and Modern 

 Engineering and the Isthmian Canal, Prof. William H. 

 Burr, 508; a Treatise on Roads and Pavements, Ira 

 Osborn Baker, 557 : British Standard Sections, British 

 Standard Beams, Standard Size of Conductors, 587 ; 

 Italian Visit of the Institution of Electrical Engineers, 

 588 ; the Thermodynamics of Heat Engines, Sidney A. 

 Reeve, Prof. John Perry, F.R.S., 602 ; Surveying as 

 Practised bv Civil Engineers and Surveyors, John White- 

 law, jun., Supp., Feb. 5, 1903, v 



England, Cost of Scientific Education in Germany and, 



Walter Smith, 127 ; Education in Germany and England, 

 Dr. F. Mollwo Perkin, 226 



English History, a New Student's Atlas of, Emil Reich, 

 461 



Entomology : Kotodonta (Hybocampa) dryinopa, from 

 Queensland, Dr. Chapman, 23 ; Entomological Society, 

 23, 118, 166, 214, 311, 430, 479, 551, 59S ; Biologia Cen- 

 trali-Americana. Insecta-Lepidoptera-Rhopalocera, Fre- 

 derick Ducane Godman, F.R.S., and the late Osbert 

 Salvin, F.R.S., 25; the South African Sheep and Goat 

 Disease, known as " Heartwater," C. P. Lounsbury, 38; 

 Monographie des Cynipides d 'Europe and d'AlgeVie, 

 Abb£ J. J. Kieffer, 124; Death and Obituary Notice of 

 Prof. Adolfo Targioni-Tozzetti, 156 ; Introduction of the 

 Brimstone Butterfly into Tipperary, E. Bagwell-Purefoy, 

 158 ; Cause of Hostility of Ants of the Same Species, Miss- 

 A. M. Field, 158; Habits of Apatura iris, Dr. Norman 

 H. Joy, 166; Lepidoptera and Choice of Plant Food, 

 A. H. Church, R. McLachlan, and Mr. Goss, 166; the 

 Enemies of Lepidoptera in Natal, G. F. Leigh, 166 ; a 

 Hybrid Sclenia bihuiaria x S. tetrahtnaria, R. Adkin, 

 214; Die Wanderheuschrecken und ihre Bekamprung in 

 unseren Afrikanischen Kolonieen, Dr. L. Sander, 244 ; 

 Function of the Flagellated Body of the Malaria Para- 

 site, Dr. Moore, 279 ; Origin of the Coleoptera, Canon 

 Fowler, 311; Insects and Petal-less Flowers, Prof. 

 Plateau, G. W. Bulman, 319; E. Ernest Lowe, 368: 

 Hypopeltis Tea-Pest, E. E. Green, 328 ; Monographie des 

 Mutillides d'Europe et d'AlgeHe, Ernest Andre\ 342 ; 

 Symphilism, E. Wasmann, 351 ; Effects of Natural Se- 

 lection and Race-tendency upon the Colour-patterns of 

 the Lepidoptera, A. G. Mayor, 351 ; Collection of Butter- 

 flies formed by David Hanbury on the Arctic Coast of 

 North America, 430; the Lepidoptera of the British 

 Islands, Charles G. Barrett, 438 ; Catalogue of the Col- 

 lection of Palaearctic Butterflies formed by the late John 

 Henry Leech, Richard South, 583 ; Coleoptera of 

 Colorado, H. F. Wickham, 399; a Case of Pseudo- 

 mimicry, Captain F. W. Hutton, F.R.S., 430; Prof. 

 E. B. Poulton, F.R.S., 439; Cerataphis Lataniae, Miss 

 A. L. Embleton, 454 ; Spiders and Wasps from Singa- 

 pore, C. J. Saunders, 479 ; Entomology at Oxford, 572 ; 

 a Katydid's Resourcefulness, Arthur G. Smith, 612 ; 

 Method of Studying the Action of Insects' Wings by In- 

 stantaneous Photography, Robert von Sendenfeld, 617 



Entropy, Sidney A. Reeve, Prof. John Perry, F.R.S., 602 



Ephemeris for Comet Temper-Swift, J. Bossert, 40 



Erdmagnetische Untersuchungen im Kaiserstuhl, Dr. G. 

 Meyer, 187 



Ernecke (Ferdinand), Physikalische Apparate, 121 



Eruptions: Eruption of Soufriere, 63, 93, in, 302, 401; 

 Eruption of the Soufriere, October 15 and 16, Sir R. B. 

 Llewelyn, 63 ; Eruptions of 1902 of La Soufriere, 

 St. Vincent, E. T. Hovey, 93 ; a Preliminary Re- 

 port on, 256 ; the Eruption of the Soufriere on 

 September 3 and 4, H. Powell, 94; Report upon 

 the Eruption of the Soufriere on March 22, H. 

 Powell, 563: Eruptions of Mont Pelee, 93, in, 134, 208, 

 302, 491; E. T. Hovey, 93, 256; Eruptions of Dense 

 Clouds from Mont Petee, A. Lacroix, 335 ; White River 

 choked by Mont Pelee Eruption, Prof. Lacroix, 155 ; 

 Suggested Nature of the Phenomena of the Eruption of 

 Mont Pelee on July 9, Observed by the Roval Society 

 Commission, Dr. Edward Divers, F.R.S., 126; Conse- 

 quences of Shattering of the Cone in Crater of Mont 

 Petee, Prof. Lacroix, 208 ; West Indian Volcanic Erup- 

 tions, Prof. J. Milne, F.R.S., 91 ; Eruption of Vesuvius, 

 'So, 443, 46S, 519; Eruption of the Volcano Colima, 421, 

 4Ji : Eruptions in Nicaragua and Chili, 230 ; Eruption of 

 Del Tierra Firme (Colombia), 563 : Characteristics of 

 Recent Volcanic Eruptions, Dr. Tempest Anderson at 

 the Royal Institution, 308 ; See also Volcanoes 



Esch (Father), Observation of Long Period Variable Stars 

 2 54 



Esclangon (E.), Recent Sunset Glow's at Bordeaux, 95. 



Escombe (F.), Die Zersetzung Stickstofffreier organischen 

 Substanzen durch Bakterien, Dr. O. Emmerling, 316 



Espitalier (Leut. -Colonel G.), Journeys Across the Sea in- 

 a Balloon, Henri Herv^'s Balloon, 181 



Esterre (C. R. D'), Les Moteurs a Explosion, G. Moreau. 

 145 ; Theorie des Moteurs a Gas, G. Moreau, 145 



