Nature, Index XIX 
June 9, I 04 
ductivity of Substances Dissolved in Certain Liquefied 
Gases, B. D. Steele and D. McIntosh, 95; Electrical 
Resistance of the Human Body, Stéphane Leduc, 96; 
Electrical Engineering Measuring Instruments, G. 
Aspinall Parr, 101; the Edison Accumulator for Auto- 
mobiles, W. Hibbert at the Institution of Electrical 
Engineers, 114; an Electric Thermostat, Horace Darwin, 
118; Instruments used in Testing of Electric Generators 
by Air Calorimetry, Prof. R. Vhrelfall, 118; Measure- 
ment of the Effect of Electric Waves at a Distance by 
the Bolometer, G. Tissot, 119; Influence of Gases on the 
Separation of Nickel and Zinc by Electrolysis, MM. 
Hollard and Bertiaux, 120; Phenomena Presented by 
Mercury Arcs, M. de Valbreuze, 143; Negative Elec- 
tricity Given Off by a Metal Exposed to Réntgen Rays, 
Prof. Thomson, F.R.S., 143; Electricity and Magnetism, 
R. T. Glazebrook, F.R.S., 148; C. E. Ashford, Maurice 
Solomon, 243; Electric and Magnetic Circuits, Ellis H. 
Crapper, Maurice Solomon, 243; Results of Measure- 
ments of the Light Distribution and Mean Spherical 
Candle-power of the American Pattern Nernst Lamps, 
157; Utility of Wireless Telegraphy at Sea, 157; ‘* Tele- 
funken System,’’ New Method of Wireless Telegraphy, 
W. Schloemilch, 257; Onde Hertziani e Telegrafo senza 
Fili, Oreste Murani, 460; the Gilbert Tercentenary, 162 ; 
Bitumen in Insulating Compositions, J. A. Sutherland, 
191; Study of a Contact Resistance, A. Blanc, 192; a 
Text-book of Electrical Machinery, H. J. Ryan, H. H. 
Norris and G. L. Hoxie, Maurice Solomon, 243; Opere 
di Galileo Ferraris, 246; New Form of Electrical Resist- 
ance Furnace, Dr. Frdélich, 258; Soluble Silver Com- 
pounds Formed in Preparation of Colloidal Silver Solu- 
tions by Sparking between Silver Electrodes under 
Water, J. C. Blake, 258; a Theory of the Cause of Atmo- 
spheric Electricity, George Simpson, 270; Atmospheric 
Electricity, Sir Oliver Lodge, F.R.S., 294; the Radiation 
from an Electron Describing a Circular Orbit, Oliver 
Heaviside, F.R.S., 293; the Radiation from an Electron 
Moving in an Elliptic or Any Other Orbit, Oliver Heavi- 
side, F.R.S., 342; Electric Radiation from Conductors, 
H. M. Macdonald, 311; on the Action of Radium Bromide 
on the Electrical Resistance of Bismuth, R. Palliot, 311; 
Striking Observation on a Tube of Radium Bromide, 
Herr Dorn, 567; Electrochemical Behaviour of Radium, 
Alfred Coehn, 567; Influence of the Physical Nature of 
the Anode on the Constitution of Electrolytic Peroxide of 
Lead, A. Hollard, 311; Death of W. C. McMillan, 326; 
Obituary Notice of, 347; Study of the Dielectric Constant 
of Water at Low Temperatures, O. U. Vonwiller, 360; 
Photo-telephony, Shelford Bidwell, F.R.S., 373; Elec- 
trical Conductivity of Aqueous Solutions at High Tem- 
peratures, Messrs. Noyes and Coolidge, 377; Applications 
of the Theory of Electrolysis to the Separation of Metals 
from One Another, M. Hollard, 381; Electrolytic Oxida- 
tion, of Phenols, A. G. and F. M. Perkin, 382 ; Compari- 
son of Capacities in Electrical Work, Prof. J. A. McClel- 
land, 383; New Electrical Device for Extinguishing the 
High Frequency Arc, M. d’Arsonval, 383; Protective 
Arrangements for Electrical Machines Supplying High 
Frequency Generators, MM. d’Arsonval and Gaiffe, 383; 
on the Reduction Phenomena Produced by the Action of 
Alternating Currents, F. Pearce and Ch. Couchet, 384; 
the New Osmium Lamps, Prof. F. G. Baily, 397; Influ- 
ence of Complex Ions in Electrolysis by Alternating Cur- 
rents, André Brochet and Joseph Petit, 408; a Multi- 
metre Resistance Bridge, Prof. A. C. Mitchell, 430; New 
Method of Detecting Electrical Oscillations, J. A. Ewing, 
F.R.S., and L. H. Walter, 430: Rate of Dissipation of 
Electrical Charges in the Open Air, Dr. Coleridge Farr, 
450; the Charpentier-Gaiffe Platinum Interrupter, 470; 
A. Apps, 518; Dielectric Cohesion of Argon and its Mix- 
tures, E. Bouty, 479: Different Conditions of a Spark 
Fractionated by Blowing, J. Lemoine and L. Chapeau, 
479; Completion of the Electrical Equipment of the 
Liverpool and Southport Line of the Lancashire and 
Yorkshire Railway, 49%; Electricity in Mines, 494; 
Amount of Energy Set Free in a Receiving Antenna at 
Different Distances, C. Tissot, 503; the Kathode Poten- 
tial, the Essential Factor in the Electrolytic Reduction of 
Nitro-compounds, Messrs. Léb and Moore, 520; the Con- 
struction of Some Mercury Standards of Resistance with 
a Determination of the Temperature Coefficient of Resist- 
ance of Mercury, F. E. Smith, 526; Arterial Tension 
Reduced by High Frequency Currents, A. Moutier, 528; 
Production of High Frequency Currents by Telephone, 
M. Ducretet, 540; New Receiver for Telautography, Dr. 
A. Korn, 540; Theory of Amphoteric Electrolytes, Prof. 
James Walker, F.R.S., at the Royal Society, 545; Elec- 
trolytic Analysis of Gold, F. M. Perkin and W. C. 
Prebble, 551; a Hot-wire Ammeter for Measuring Very 
Small Alternating Currents, Prof. Fleming, 551; Am- 
meter for Small Alternating Currents, Dr. W. Watson, 
551; Measurement and Standard of Small Inductance, 
Prof. Fleming, 551; Thin-film Electrolysis and a Pro- 
posed Application to Printing, C. R. Darling, 551; on 
the Measurement of Certain Very Short Intervals of 
Time, Lord Rayleigh, O.M., F.R.S., 560; Arnold Electro- 
pneumatic System of Traction, 565; Electric Resistance 
Thermometry at the Temperature of Boiling Hydrogen, 
Prof. James Dewar, F.R.S., 573; Notes on Electric 
Railway Economics and Preliminary Engineering, W. C. 
Gotshall, 579; Engineering Preliminaries for an Inter- 
urban Electric Railway, E. Gonzenbach, 579; Electro- 
lytic Decomposition by Alternating Currents, Messrs. Le 
Blane and Shick, 589; a New Primary Cell, E. G. P. 
Bousfield, 598; Arrangement for Determining the Capa- 
cities of Condensers by the Successive Discharge Method, 
H. Morris-Airey and E. D. Spencer, 599; Spectrum of 
the Glow Discharge at Atmospheric Pressure, Dr. G. A. 
Hemsalech, 599; Electrical Osmosis in Methyl Alcohol, 
A. Baudouin, 600 
Elements, Degradation of, S. H. Woolhouse, 512; Sir 
William Ramsay, K.C.B., F.R.S., 512 
Elements and Ephemeris for Wolf’s Comet (1884 IIT.), A. 
Berberich, 620 
Elevation, Relation between Temperature and, Prof. Teis- 
serenc de Bort, 500 
Elliot (Dr. D. G.), the Use of the Term Odocoileus for 
the American White-tailed Deer, 14 
Ellis (David), on the Discovery of Cilia in the Genus Bac- 
terium, 522 
Ellis (Havelock), a Study of British Genius, 578 
Elster (Prof.), the Ionisation of Atmospheric Air, 154; 
Radio-activity of the Air and the Soil, 444 
Emich (Prof.), the Determination of Vapour Densities at 
High Temperatures by Application of the Diffusion 
Method of Bunsen, 113 
Empire, the Evolution of, Sir John A. Cockburn, K.C.M.G., 
568 
Empirical Formula, a Useful, Prof. John Perry, F.R.S., 
102; Prof. J. D. Everett, F.R.S., 151 
Energy of Radium Compounds, the Source of the, William 
Ackroyd, 295 
Energy, Relative Motion and the Conservation of, Prof. 
G. H. Bryan, F.R.S., 222 
Engberg (Carl C.), the Degree of Accuracy of Statistical 
Data, 93 
Engineering Whittaker’s Electrical Engineer’s Pocket 
Book, 4; the Steam Turbine, Robert M. Neilson, 4; 
American Railways, Edwin A. Pratt, 52; Expansion 
Curves, B. A. Behrend, 56; Prof. J. Perry, F.R.S., 56; 
Death of Prof. Robert H. Thurston, 61; Obituary Notice 
of, 109; the Newcomen Engine, Henry Davey at Insti- 
tution of Mechanical Engineers, 67; Storage Battery 
Engineering, Lamar Lyndon, 78; Equipment of the 
Manchester School of Technology, Prof. John T. Nicol- 
son, 79; Water Supply, a Student’s Handbook on the 
Conditions Governing the Selection of Sources and the 
Distribution of Water, Reginald E. Middleton, 99; 
Electrical Engineering Measuring Instruments, G. D. 
Aspinall Parr, tor; Death and Obituary Notice of Sir 
Frederick Bramwell, F.R.S., 110; the Edison Accumu- 
lator for Automobiles, W. Hibbert at the Institution of 
Electrical Engineers, 114; Deposits in Pipes and Other 
Channels Conveying Potable Water, Prof. J. Campbell 
Brown, 185; Liquid Fuel and its Combustion, W. H. 
Booth, 196; Grandeurs Géometriques, J. Pionchon, 
198; on the Distribution and Intensity of the Pressure on 
Thin Plates and Combinations of Plates Placed in a 
Uniform Current of Air, Dr. T. E. Stanton, 204; Oxford 
and Science, Prof. John Perry, F.R.S., 207, 260; 
Dr. H. M. Vernon, 269; Science at Oxford 
