x Index [ Nature, 
and Cambridge, A. R. Hunt, 318; Prof. G. H. 
Bryan, F.R.S., 342; Electricity and Magnetism, C. E. 
Ashford, Maurice Solomon, 243; Electric and Magnetic 
Circuits, Ellis H. Crapper, Maurice Solomon, 243; a 
Text-book of Electrical Machinery, H. J. Ryan, H. H. 
Norris and G. L. Hoxie, Maurice Solomon, 243; Death 
of Dr. von Hefner-Alterneck, 255; Irrigation Engineer- 
ing, Herbert M. Wilson, 291; Graphic Statics, with 
Applications to Trusses, Beams, and Arches, Jerome 
Sondericker, 292; Engineering Standards Committee, 
No. 3, Report on the Influence of Gauge, Length and 
Section of Test Bar on the Percentage of Elongation, 
Prof. W. C. Unwin, F.R.S., 314; Technical Mechanics, 
Prof. E. R. Maurer, 314; Death of W. C. McMillan, 
326; Obituary Notice of, 347; the Sanding-up of Tidal 
Harbours, A. E. Carey at the Institution of Civil 
Engineers, 332; Friction and its Reduction, G. U. 
Wheeler, 339; a Treatise on Friction and Lost Work in 
Machinery and Mill-work, R. H. Thurston, 339; Distri- 
bution of Stress and Strain in the Cross-Section of a 
Beam, John Morrow, 380; Free-hand Lettering, Being 
a Treatise on Plain Lettering from the Practical Stand- 
point for Use in Engineering Schools and Colleges, 
Victor T. Wilson, 411; Strength and Elasticity of Struc- 
tural Members, R. J. Woods, 434; the Relation of 
Mathematics to Engineering, Prof. C. A. Waldo at the 
American Association, 500; Engine Tests and Boiler 
Efficiencies, J. Buchetti, 532; Entropy or Thermodyna- 
mics from an Engineer’s Standpoint- and the Rever- 
sibility of Thermodynamics, James Swinburne, Prof. 
John Perry, F.R.S., 561; Notes on Electric Railway 
Economics and: Preliminary Engineering, W. C. 
Gotshall, 579; Engineering Preliminaries for an Inter- 
urban Electric Railway, E. Gonzenbach, 579; ‘‘ Little ’’ 
Universal Drawing Instrument, J. Pillet, 617 
England: Memoirs of the Geological Society of the 
United Kingdom, the Cretaceous Rocks of Britain, vol. 
ii., the Lower and Middle Chalk of, A. J. Jukes-Browne, 
133 
English Grammar, an, Rev. S. Claude Tickell, 532 
English Sport, 267 
English (Douglas), Wee Tim’rous Beasties, Studies of 
Animal Life and Character, 176 
English (Lieut.-Colonel T.), Eocene and Later Formations 
Surrounding the Dardanelles, 478 
Enriques (Prof. F.),- Verlesungen tber projektive Geo- 
metrie, 531 
Entomology : Development~of- Colour in Insects,- W. L. 
Tower. 14; Gastrophilus nasalis, Chersodromia hirta and 
Pamponerus -germanicus, Colonel J. W. Yerbury, 71; 
Entomological Society, 71, 165, 191, 335, 407, 526, 574; 
Nature Biographies, Clarence Moores Weed, O. V. Aplin, 
73; the South African Sheep and Goat Disease, ‘‘ Heart- 
water,’’ C, P. Lounsbury, 91; Gongylus gongyloides, a 
Floral Mantis, Captain C. E. Williams, 95; the Cotton 
Worm, 112; the Life-History of a New Monophlebus from 
India and a Vedalia Predaceous upon It, E. P. Stebbing, 
119; a Monograph of the Tsetse Flies (Genus Glossina, 
Westwood) Based on the Collection in the British 
Museum, E. E. Austen, 123; the Emission of Musical 
Notes by the Hover-flies of the Genus Eristalis, W. H. 
Harris, 158; a Remarkable Kind of Variability in Beetles 
of the Trogid Genus Acanthocerus, G. J. Arrow, 165; 
Photographs by A. H. Thayer to Illustrate his Views on 
the Significance of the Colours and Patterns of Butter- 
flies’ Wings, 165, 191; the Butterflies and Moths of 
Europe, W. F. Kirby, 197; Catalogue of the Lepidoptera 
Phalzenz in the British Museum, Sir George F. Hamp- 
son, Bart., 173; Immigration of Insects from the Con- 
tinental Coasts, Mr. McLachlan, F.R.S., 191; Eagle 
Clarke, 191; the Fauna of British India, including. Cey- 
lon and Burma, Rhynchota, vol. ii., part i. (Heteroptera), 
W. L. Distant, 3900; New Species of Napeogenes, W. J. 
Kaye, 407; Papilio dardanus, Geo. F. Leigh, 407; 
Mechanism of the Movement of the Wing in Insects, 
Lucien Bull, 456; Insects Attacking Corn-stalks, F. M. 
Webster, 494; Insect Enemies of the Sugar-beet, F. H. 
Chittenden. soa: a Formidable Enemy to the Cotton 
Plant, W. F. Kirby, 499; Long Bred Series of Triphaena 
comes, A. Bacot, 526; the Hope Reports, 549; Mimetic 
Insects and Spiders from Borneo and Singapore, Mr. 
June 9, 1904 
Shelford, 549; Colour Relation between Lepidopterous 
Larve and their Surroundings, Prof. Poulton, 549; the 
Pests and Blights of the Tea Plant, Sir G. Watt. and 
H. H. Mann, 580 
Entropy or Thermodynamics from an Engineer’s Standpoint 
and the Reversibility of Thermodynamics, James Swin- 
burne, Prof. John Perry, F.R.S., 561 
Entwickelungsgeschichte, Einfiihrung in die Experimentelle, 
Prof. Otto Maas, 241 
Ephemeris for the Minor Planet (7) Iris, Dr. J. Riem, 377 
Ephemeris for Winnecke’s Comet, 207 
Ephemeris for Wolf’s Comet (1884 III.), Elements and, 
A. Berberich, 620 
Equatorial Mounting, a New Form of, A. F. Lindemann, 
521 
Erdmagnetismus, Erdstrom und Polarlicht, Dr. A. Nippoldt, 
341 
Eninagneliocine fiir die Epochen 1600, 1700, 1780, 1842 
and 1915, Atlas der, Dr. H. Fritsche, 268 
Erdmann (Ernst), High Vacua for Distillation Produced by 
Carbon Dioxide and Liquid Air, 37 
Erdstrom und Polarlicht, Erdmagnetismus, Dr. A. Nippoldt, 
341 
Bins, Meridian Circle Observations of, John A. Dunne, 282 
Eros, Observations of, Prof. E. E. Barnard, 542 
Escape of Gases from Atmospheres, Dr. G. Johnstone 
Stoney, F.R.S., 247; S. R. Cook, 487 
Essays and Addresses, 1900-1903, Right Hon. Lord 
Avebury, 481 
Essex, Kent and, Sea Fisheries Committee, Report on the: 
Sea Fisheries and Fishing Industries of the Thames 
Estuary, Dr. James Murie, 577 
Ether, an Attempt towards a Chemical Conception of the, 
Prof. D. Mendeléeff, 558 
Etheridge (Robert, F.R.S.), Death and Obituary Notice 
of, 181 
Ethnography : Great Benin, its Customs, Art and Horrors, 
H. Ling Roth, 132; Queries in Ethnography, Albert 
Galloway Keller, 172 
Ethnology: Indians of the South-West,. George A. Dorsey, 
Bion Nature-study and Observational Lessons, M. D. Hill 
and W. M. Webb, 364 
Eucken (Rudolf), Gesammelte Aufsatze zur Philosophie und 
Lebensanschauung, 170 
Euclid’s Definition of a Straight Line, 489; Prof. J. D. 
- Everett, FURIS:,) 535 - - : 
Europe, the Butterflies and Moths of, W. F. Kirby, 197 
European Polity, the Development of, Henry Sidgwick, Sir 
Frederick Pollock, Bart., 265 
Evans (A. W.), Botany of Patagonia, 253 
Evans (Lovatt), the so-called Hibernating Gland of the 
Hedgehog, 14 : 
Eve (A. S.), Rontgen Rays and the y Rays from Radium, 
36 
Byerett (Prof. J. D., F.R.S.), Rocket Lightning, 30, 224, 
375; a Useful Empirical Formula, 151; Euclid’s Defini- 
tion of a Straight Line, 535 
Evolution: Doubts about Darwinism, 98; Reasons against 
-the Theory of Evolution, Thomas Woods, 221; a New 
Theory of Organic Evolution, James W. Barclay, 316; 
Evolution of Matter as Revealed by the Radio-active 
Elements, F. Soddy, 418; Mimicry, Selektion, Darwin- 
ismus, M. C. Piepers, Prof. Sydney J. Hickson, F.R.S., 
458; Ueber verschiedene Wege phylogenetischer Ent- 
wickelung, Prof. O. Jaekel, 484; the Evolution of Empire, 
Sir John A. Cockburn, K:C.M.G., 568 : 
Ewart (Dr. J. Cossar, F.R.S.), the Multiple Origin o 
Horses and Ponies, 590 
Ewing (J. A., F.R.S.), New Method of Detecting Electri- 
cal Oscillations, 430 ; ; 
Existence, la Lutte pour 1’, et l’Evolution des Sociétés, 
J. L. de Lanessan, 77 
Expansion Curves, B. A. Behrend, 56; Prof. J. Perry, 
F.R.S., 56 
Exploration of the Caves of Kesh, County Sligo, being the 
First Report of the Committee, Consisting of Dr. R. F. 
Scharff, George Coffey, Prof. Grenville A. J. Cole, R. J. 
Ussher and R. Lloyd Praeger, Appointed to Explore 
Irish Caves, 189 
Exploration, Central Asian, Sven Hedin, 225 
Explosive Action of Lightning, R. A. West, 31 
