Index 



LSnppUmcitt to Nature, 

 .\'ovemier3&, 1891 



Duboin (A.), New Method of Determining Vertical Motion of 



Aerostats, 144 

 Duck's Forethought, a Wild, W. Prentis, 550 

 Ducretet (M.), the Cryogen, an Apparatus for quickly Lowering 



Temperature by Expansion of Liquid Carbonic Acid, 232 

 Duncan (Dr. P. Martin, F.R.S.), Death and Obituary Notice 

 _of, 135, 387 



Dunstan (W. R.), Interaction of Alkalies and Nitroethane, 118 

 Duppa-Crotch (W.), a Rare Phenomenon, 614 

 Durham College of Science Calendar, 502 

 Durham (William), Food Physiology, 540 

 Dutton (Captain), and Geology in America, 183 

 Dyer(W.T. Thiselton, F.R.S.), University of London Question, 



52 ; the Albert University, 196 

 Dymond (T. S.), Interaction of Alkalies and Nitroethane, 118 



Eakins (L. E.), New Analyses of Astrophyllite and Tscheflf- 



kinite, 310 

 Ealing Microscopical and Natural History Society, Report of, 40 

 Ealing, Remarkable Meteor at, 599 



Earth, Determination of Gravitation Constant and Mean Den- 

 sity of, by means of Common Balance, J. H. Poynting, 

 F.R.S., 165 

 Earth, Researches on the Mean Density of the, Prof.A.Cornu,327 

 Earth's Orbital Motion in Elher, Clock for pointing out Direc- 

 tion of, Prof. Oliver J. Lodge, F.R.S., 238 

 Earth's Rotation, Prof. Padelletti on the Insufficiency of the 

 usual Investigation for Movement of Plane of Oscillation of 

 Foucault's Pendulum in relation to, 326 

 Earth-currents and the Electric Railway, William Ellis, 127 

 Earthquakes : at Athens, 40 ; near St. Paul's Rocks in the 

 Atlantic, 41 ; Earthquake of June 7, Prof. A. Riggenbach- 

 Burckhardt, 151 ; Earthquakes in Italy, 136, 161 ; the Recent 

 Earthquakes in Italy, Prof. J. P. O'Reilly, 293 ; the Earth- 

 quakes in Bengal and Italy, 185 ; Earthquake shocks in Italy 

 and Australia, R. L. J. Ellery, F.R.S., 206, 272 ; the Inver- 

 ness (1890), C. Davison, 240 ; Earthquakes in Indiana, 303 ; 

 in San Salvador and the Azores, 475 ; at San Francisco, 

 575 ; at Pantellaria, 599 ; Earthquake at Bournemouth, 

 Henry Cecil, 614 

 Earthworms, Identification of Templeton's British, Rev. Hilderic 



Friend, 273 

 Eastbourne, Johnson's Visitors' Companion to, 388 

 Eclipse of June 6, 1891, Partial Solar, M. Perrotin, 168 

 Edinburgh, the 1892 Visit of the British Association to, 16 r 

 Edinburgh Royal Society, 119, 166, 191, 263, 310, 359 

 Edinburgh, Proposed Informal Congress on Scottish Higher 



Education, 258 

 Edinburgh University, Summer Graduation Ceremony, 323 

 Education : Technical, and County Councils, 324 ; Sir T. H. 

 Farrer, 6 ; J. C. Buckmaster, 588 ; the Technical Education 

 of Girls, 185 ; National Association for the Promotion of 

 Technical, 231 ; Lord Hartington on Technical Education, 

 234 ; Technical Education in the South-Eastern Counties of 

 England, 303 ; Technical Education for Farmers, Farriers, 

 and Engine Drivers, John L. Winter, 320 ; the City and 

 Guilds of London Institute and Instruction in Woodwork in 

 Public Elementary Schools, 327 ; the Progress of Technical 

 Education, 351 ; New Physics and Electrical Engineering 

 Department at Manchester Technical School, 475 ; Technical 

 Education in Essex, 548 ; in Scotland, 549 ; Advertisements 

 for Instructors, 565 ; Alterations in the Science and Art 

 Directory, 40 ; University Extension Scheme, 40 ; Eighteen 

 Years of University Extension, 52 ; Education in India, 67, 

 88 ; Secondary Education in Scotland, 161 ; Educational 

 Aspects of Free Education, 169 ; Technical Education in 

 Agriculture, Dr. W. Fream, 137 ; University of Oxford and 

 Agricultural Education, 183 ; Hygienic Advantage of Erect 

 as Compared with Slanting Writing, Dr. Lore.iz, 325 ; the 

 Kindergarten System in New York, 502 ; Increased Accom- 

 modation for Scientific Education at Oxford, iii; the 

 Scientific Measurement of Children with Respect to Educa- 

 tion, Rev. H. A. Soames, 114; Scientific, Appointments to 

 1851 Exhibition Science Scholarships for 1891, 258, 351 ; 

 Les Sciences Naturelles et I'Education, Prof T. H. Huxlej', 

 F.R.S., 272 ; Existing Schools of Science and Art, 

 Oliver S. Dawson, 547 ; Proposed Informal Congress at 

 Edinburgh on Scottish Higher Education, 258 ; Annual Re- 

 port of Oxford University Extension Delegates on Secondary 

 Education, 451 ; Education and Heredity, J. M. Guyau, 292 



Edwards (Frederick E.) Collection of British Oligocene and 

 Eocene Mollusca in the British Museum, Systematic List of, 

 Richard Bullen Newton, 610 

 Eginitis (D.), Observation of Passage of Mercury across 



Sun's Disk, May 9, 1891, 119 

 Egypt : Locusts in, 40 ; the Dog in Ancient Egypt, M. 

 Maspero, 207 ; the Preservation of Ancient Monuments in, 

 281 ; the Engineering Importance of Dongola, 301 ; 

 the Projected Storage Re'^ervoir, 548 ; Discovery of Three 

 Colossal Statues at Aboukir, 575 ; Exploration in. Flinders 

 Petrie, 630 ; Egyptian Irrigation, 145 ; Sir Colin MoncriefT 

 on, 151 

 Ehrlich (Prof), Koch's Present Views regarding Tuberculin, 



398 

 Ehrlich (Dr.), Immunity, Natural and Acquired, 422 

 Elbolton Cave near Skipton, B.A. Report on, 480 

 ' Electricity: Hertz's Experiments, 12, 31; Electricity in the 

 I i'hysical Department at Bangor University College, 18 ; 

 1 Intensity Coils, how made and how used, by " Dyer," 28 ; 

 Production of Solid Carbon Dioxide, Dr. Haussknecht, 42 ; 

 ! Earth Currents, the Electric Railway and the Royal Observa- 

 I tory, William Ellis, 127 ; the Theory of Electro-dynamics, 

 I J. Larmor, 139 ; Blakesley's Method of Measuring Power in 

 I Transformers, Prof. Perry, F.R.S., 142; New Model of 

 ' Copper Oxide Batteries, F. de Lalande, 144 ; Quadrant 

 i Electrometers, W. E. Ayrton, F.R.S., J. Perry, F.R.S., and 

 I W. E. Sumpner, 166 ; Pocket Electrometers, C. V. Boys, 

 I F. R.S., 262 ; Dielectric Properties of Mica at High Tempera- 

 i tures, E. Bouty, 168 ; Discharge without Electrodes through 

 i Gases, Prof J.J. Thomson, F.R.S., 187; Experiments on 

 Liquid Electrodes in Vacuum Tubes, C. Chree, 191 ; Electri- 

 ! cal Evaporation, Wm. Crookes, F.R.S., 212; Electrolysis 

 [ of Barium Chloride, C. Limb, 216 ; the Formation of Salts, a 

 j Contribution to the History of Electrolysis, H. E. Armstrong, 

 ' F.R.S., 287 ; Papers on Electrolysis at the Meeting of the 

 British Association, 454 ; Conversazione of the Institution of 

 Electrical Engineers, 231 ; Study of Plante Cell, from Chemi- 

 cal Point of View, I., G. H. Robertson, 236; II.. H. E. 

 Armstrong, F.R.S., and G. H. Robertson, 237; Alternate 

 Current and Potential Difference, Analogies in Methods of 

 Measuring Power, Prof Ayrton and Dr. Sumpner, 237 ; 

 Experiments with Leyden Jars, Prof, Oliver J. Lodge, 

 F.R.S., 238 ; Contributions to the Study of Atmospheric, Ch. 

 Andre, 240 ; Magnetic Anomalies, Alfonso Sella, 249 ; Con- 

 struction of Non-inductive Resistances, Prof W. E. Ayrton, 

 F.R.S., andT. Mather, 261 ;the Observation of Atmospheric, 

 Herren Elster and Geitel, 281 ; Prof. Poincare on Maxwell's 

 Electromagnetic Theories, Prof A. Gray, 296 ; Electric 

 i Resistance of Cobalt, Prof Knott, 311 ; the Relative Cost of 

 j Electricity in London and Elsewhere, M. Haubtmann, 324 ; 

 the Origin of the New Electric Photophone, 325 ; Messrs. 

 ! Staite and Petrie's New Electrical Light, 327 ; Proposal 

 by Sir Edward Watkin to place Electric Light on Snowdon, 

 I 352 ; Electric Light Fitting, a Handbook for Working Elec- 

 I trical Engineers, John W. Urquhart, 586 ; the Report of the 

 I Board of Trade "Committee on Electrical Standards, 417 ; 

 I Electrical Standards, 434 ; an Introduction to the Mathemati- 

 cal Theory of Electricity and Magnetism, W. T. A. Emtage, 

 • 443 ; Electrical Exhibition, Crystal Palace, 450, 597 ; Pro- 

 ! posed International Conference of Electricians at Chicago 

 I Exhibition, 450, 575 ; International Electro-Technical Con- 

 gress, 450 ; Electric Observations on Sonnblick, Herren 

 Elster and Geitel's, 452 ; Prof D. E. Jones on Electric 

 Waves in Wires, 454 ; A. P. Laurie on the Electromotive 

 [ Forces of Various Alloys, 455 ; Dampening of Oscillations in 

 Iron Wire, John Trowbridge, 463 ; Frankfort International 

 Electrical Exhibition, 494, 521, 542, 615 ; Prof G. Forbes 

 on Electric Motors, 510 ; Electric Transmission of Power, 

 Joseph J. Murphy, 590 ; Mr. C. E. Kelvvay's Apparatus for 

 I Marine and General Electrical Signalling, 575 

 ! Elkin(Dr.), Observatory of Yale University, 283 

 Ellacott (Captain Wm.), a Comet observed from Sunrise to 



Noon, 82 

 Ellery (R. L. J., F.R.S.), Earthquake Shocks in Italy and 



Australia, 272 

 Elliott (Edwin Bailey), proposed Fellow of the Royal Society, 



Ellis (William) : Earth Currents, the Electric Railway, and the 

 j Royal Observatory, 127 ; Comparison of Thermometrical 

 j Observations in Stevenson Screen with same on Revolving 

 i Stand at Greenwich Observatory, 239 



