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A History of Wireless Telegraphy (2nd edition, revised), J. J. Fahie, 1901, pages 341-348:



Action-at-a-distance v. action-by-contact referred to.
Air vibrations -- table of.
Armstrong, Lord -- on skin-deep penetration of high-tension electricity.
Aseoli, Prof. -- on Marconi's law of distance.
Auticatelephor of Edwards.

Balloons -- to support telegraph wires.
Bell, Prof. Graham -- his photophone referred to -- experiments in signalling through water -- applicable to ships at sea.
Béron -- plan for wireless telegraph referred to.
Blake, Prof. Lucien -- induction between neighbouring circuits -- experiments on communication with lightships -- and with moving vessel.
Blissett -- signalling across water referred to.
Blondell, Prof. -- his detector.
Bonelli -- experiments in wireless telegraphy referred to -- system of train signals referred to.
Bose, Prof. Chunder -- his exciter -- his detector.
Bouchotte -- experiments in wireless telegraphy referred to.
Bourbouze -- signalling through water of the Seine.
Branly, Prof. E. -- his detector or "radio-conductor" -- on obstacles to Hertzian waves -- researches on conductivity under electrical influence.
Brooke, Sir W. O'S. -- experiments in signalling through water.
Brown, A. C. -- his invention of the photophone referred to -- on train telegraphy by induction, -- on signalling across breaks in cables.

Call-bell arrangements -- first, second.
Calzecchi-Onesti -- early observations on the coherer principle -- his detector -- as a seismological recorder.
Carty -- on the electro-static effects in telephone circuits, referred to.
Channing, Dr -- on distant currents picked up in telephone circuits -- on induction between two telephone circuits.
Clerk-Maxwell, Prof. -- his electro-magnetic theory of light, first, second.
Coherer. See Detector.
Condenser, use of -- in wireless telegraphy, first, second.
Crookes, Sir W. -- forecast of the Marconi system -- his letter to the author re Prof. Hughes's early experiments.
Currents, electric -- Poynting's theory of -- modern views of.

D'Asar, Russo -- experiments in Hertz-wave telegraphy referred to.
Davy, Edward -- method of signalling based on electricity and sound -- first inventor of the relay principle -- proposals for train signalling.
De la Rive, Prof. A. -- explanation of "Galvanic Music" referred to.
De la Rive, L. See Sarasin.
Dering, G. E. -- early telegraphic apparatus -- his lightning-guards anticipate those of Siemens and others -- proposals for bare-wire subaqueous telegraph -- actually attempted.
Detector -- Highton's gold-leaf -- Prof. Hertz's -- for Hertzian waves, various, first, second -- action of detector.
Dolbear, Prof. -- electro-static method of telegraphy -- compared with Marconi's -- successful up to 13 miles.
Douat -- experiments in wireless telegraphy referred to.
Dufour, H. -- inductive effect of one circuit on a distant one.

Earth, conductivity of the -- first, second, third.
Earth, electrification of the -- first, second.
Earth, part of the -- in Preece's system -- in Marconi's system.
Earth-battery, first proposal of the.
Earth-battery, applications of the -- first, second.
Earth circuit -- discovery of the.
Earth-currents or leakages.
Earthquakes -- suggested electric origin of.
Edison, T. A. -- "Etheric Force" of, referred to, first, second -- electro-static train telegraphy -- potentiality of the system -- its use on railways -- application to long~distances.
Edwards, his auticatelephor (? a pneumatic telegraph).
Electric eye, the -- first, second, third.
Electricity -- definitions of, by Faraday and others -- atmospheric, for signalling -- apparatus for observing.
Electricity and light -- relation between.
Electro-magnets -- Morse's -- Edward Davy's, Page's, and Royal House's referred to.
Ether vibrations -- table of.
Ether -- theory of the.
Etheric Force, the -- referred to, first, second.
Evershed, Sydney -- attempt to communicate with lightships by induction through coils -- his delicate relay.
Exciters, Hertzian-wave -- various.
Exploding by Hertz-waves referred to -- first, second.

Fahie, J. J. -- suggestions for a photophone referred to -- on signalling across breaks in telegraph wires -- letters to, from Profs. Crookes and Hughes.
Faraday, Prof. -- definition of electricity -- greatness of his work referred to.
Fessenden, Prof. -- transformer for Hertz-wave telegraphy.
Fleming, Prof. -- on Marconi's cross-Channel experiments.

Gauss, Prof. -- suggests use of railway rails in place of wires -- suggests use of earth-battery in telegraphy.
Gintl -- experiments in wireless telegraphy referred to.
Gott, J. -- on earth electrification and "leakages," -- their applicability to telegraphy without wires.
Granier -- his balloon-supported telegraph line referred to.
Granville, W. P. See Smith and Granville.
Guarini-Foresio -- automatic repeater for Marconi signals referred to.

Haworth, John -- unintelligible proposals for a wireless telegraph -- extracts from his patent specification -- Cromwell Varley's comments upon.
Heaviside, A. W. -- signalling to bottom of coal-pit by electro-magnetic induction.
Henry, Prof. Joseph -- observations of (probably) electric-wave effects, first, second -- his life and work referred to -- on high tension and lightning discharges along conductors, first, second -- on proper construction of lightning-conductors.
Hertz, Prof. -- researches on electric oscillations, how started -- his exciter -- his detector -- effect of resonance -- effect of ultra-violet light -- electric waves in space -- velocity of -- reflection of -- propagation along wires -- screening effect of metals -- electric radiation -- electric refraction -- value of his work, first, second.
Highton, Henry -- proposals for (1) wireless, (2) bare wire, and (3) badly insulated wire telegraphs -- his gold-leaf detector -- his new insulating material -- and other inventions.
Hughes, Prof. -- remedy for induction between telegraph wires referred to -- experiments in wireless telegraphy, first, second -- discovers electric waves -- his detectors.

Impedance (choking) coils -- good effect of.
Impulsion-cell as a detector referred to.
Induction, between wires on same poles -- early notice of -- Prof. Hughes's remedy for -- effect of one telephone circuit on another -- electro-magnetic, early observations on -- Preece on -- electro-static -- Carty on.
Insulation -- telephony without.
Interference in Hertz-wave signalling.

Jackson, Capt., R.N. -- experiments in Hertz-wave signalling.
Jorvis-Smith, Rev. F. -- experiments on Hertz-wave signalling.
Johnston, W. P. -- experiments on signalling across rivers.
Joule -- welding by electricity referred to -- elongation of iron under magnetic strain referred to.

Kelvin, Lord -- referred to, first, second, third, fourth, fifth -- his law of electric oscillations.
Kerr, Dr -- researches on light.

Langdon-Davies -- his photophone, wide-spreading effects, first, second.
Laws of distance -- Stevenson's -- Preece's -- Marconi's -- Ascoli's.
Le Bon on obstacles to Marconi waves.
Light and electricity -- relation between -- electric light, Lindsay's -- ultra-violet, effect of, on sparks -- signalling by means of.
Light of the future.
Light -- electro-magnetic theory of, first, second.
Lightning -- and the telephone -- and Marconi apparatus -- oscillatory nature of -- magnetises a needle.
Lightning-conductors -- construction of, first, second.
Lightning-guards -- first, second.
Lindsay, J. B. -- his life and work -- on future uses of electricity -- experiments in electric lighting -- proposals for a telegraph to America by means of bare wire and earth-batteries -- welding by electricity -- telegraphy without wires -- Preece's recollection of -- paper read before British Association -- death and memorial.
Lodge, Prof. -- law of distance in coil method -- conception of electricity -- his detectors -- his lightning-guard -- his syntonised-wave method -- his newest proposals -- on relation between light and electricity.
Loomis, Mahlon -- use of atmospheric electricity for signalling.

Marconi, G. -- merit of his work -- apparatus for short distances -- for long distances -- law of distance -- exciters -- detectors -- speed of working -- theory of his method -- first trials -- Italian experiments -- obstacles to signalling -- effect of lightning -- public trials and installations -- for ships in a fog -- new transformer -- American Navy Board report -- interference effects -- field of utility -- future of -- first patent specification, reprint of.
Melhuish, W. F. -- bare wire system for river crossings.
Metals -- screening effect of.
Microphone -- discovery of the.
Minchin, Prof. -- impulsion-cell as a detector -- his experiments referred to.
Morse, Prof. -- experiments in signalling across water -- his first electro-magnets.
Mower, J. H. -- signalling across Atlantic without wires.
Munro, John -- on Prof. Hughes's researches quoted.
Music, galvanic -- referred to.

Nelson, Henry -- communication between ships at sea referred to.

Obstacles, effect of -- in Marconi system. See also Metals and Water.
Oscillations, electric -- law of -- Hertz's researches on.
Oscillator. See Exciter.

Page, Prof. -- his electro-magnets referred to -- discovery of galvanic music referred to.
Phonophore -- wide-spreading effects of, first, second.
Photophone, suggestions for -- by Fahie and Brown -- Graham Bell's.
Pierce, Prof. -- on sensitiveness of the telephone.
Popoff, Prof. -- experiments in Hertz-wave telegraphy.
Poynting, Prof. -- theory of electric currents.
Preece, Sir W. -- connection with Lindsay's early experiments -- on currents through the earth -- signalling across the Solent -- nature of electricity -- electro-static induction -- electro-magnetic induction -- signalling by electro-magnetic induction -- laws of current and signalling distance -- practical trials of system -- on screening effect of water -- theoretical considerations -- utility of system -- inter-planetary communication -- practical installations -- new experiments referred to -- on obstacles to Hertz-waves.

Radiation, electric. See Waves.
Railways -- use of rails for signalling -- telegraph systems for, referred to.
Rathbone, Charles -- on distant currents picked up by telephone.
Rathenau, Prof. E. -- experiments in signalling across water.
Rayleigh, Lord -- sensitiveness of telephone to high frequency currents.
Reflection, electric. See Waves.
Reflectors for Hertz-wave telegraphs.
Refraction, electric. See Waves.
Relays -- first proposed by Edward Davy -- Wilkins' and others -- Evershed's -- Smith and Granville's -- Stevenson's -- for Hertz-wave telegraphs.
Resonance, electric -- first, second, third, fourth.
Resonator, electric. See Detector.
Righi, Prof. -- his exciter -- his detector.
Rovelli -- his detector referred to.
Rowland, Prof. -- on the nature of electric currents -- on lightning and lightning-conductors.
Rutherford, Prof. -- experiments in Hertz-wave telegraphy.

Sacher, Prof. -- inductive effect of one circuit on a distant one.
Salvá -- glimmering of electrification of the earth and its applicability to signalling across the seas.
Sarasin and De la Rive -- on velocity of electric waves -- their exciter.
Schäfer, Bela -- experiments on Hertz-wave telegraphy.
Schilling, Baron -- referred to -- his needle telegraph.
Schuster, Prof. -- glimmering of the microphonic principle.
Schwendler -- experiments on signalling across water referred to.
Selenium effect -- discovery of.
Senlicq d'Andres -- signalling proposal based on electricity and sound.
Sennett, A. R. -- signalling proposal based on electricity and sound.
Shadows, electric.
Siemens' Serrated-Plate Lightning-Guard anticipated.
Slaby, Prof. -- experiments in Hertz-wave telegraphy -- tribute to Marconi -- detector.
Smith, Willoughby -- on electro-magnetic induction -- suggests train telegraphy by induction -- on communication with lighthouses and lightships.
Smith, Willoughby S., and Granville, W. P. -- modification of Willoughby Smith's plan -- practically installed -- novel "call" apparatus -- difficulties of the installation -- an old friend in a new guise.
Sömmerring -- experiment in signalling through water.
Steinheil, Prof. -- discovery of the earth-circuit -- experiments in signalling through the earth -- suggests a thermophone -- experiments with earth-batteries referred to.
Stevenson, C. A. -- plans for communicating with ships -- tried in America -- plan based on induction between coils -- law of distance -- attempted application by Evershed -- metallic-powder relay.
Stokes, Prof. -- influence on Prof. Hughes's researches.
Syntony. See Resonance.

Telegraphy -- sympathetic, referred to -- by electricity and heat -- by electricity and sound -- pneumatic and hydraulic, -- by bare wires, first, second, third, fourth, fifth -- conductive methods, first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelth, thirteenth, fourteenth, fifteenth, sixteenth -- by atmospheric electricity -- by electro-magnetic induction, first, second, third, fourth -- by electro-static induction, first, second, third -- by Hertz-waves (? Dolbear) -- Zickler -- Popoff and others -- Lodge -- Marconi, first, second -- Hughes.
Telegraphy, train -- early systems.
Telegraphy, wireless -- future of.
Telephone -- compressed-air, referred to -- sensitiveness to stray currents, first, second -- effect of lightning on -- and badly insulated line -- sensitiveness varies with frequency of currents -- optical, referred to -- as detector of Hertz-waves.
Telephone circuits -- electro-static effects in.
Tesla, Nikola -- his conception of electricity -- proposals for Hertz-wave telegraphs -- his oscillators referred to.
Thermophone -- suggested by Steinheil.
Thompson, Prof. Silvanus -- on the future of wireless telegraphy.
Threlfall, Prof. -- suggestion of a Hertz-wave telegraph.
Train telegraphy -- early systems of.
Trowbridge, Prof. John -- on the earth as a conductor -- signalling by conduction method -- by electro-magnetic induction -- by electro-static induction.
Tuma, Dr -- experiments in Hertz-wave telegraphy referred to.
Tuning, electric. See Resonance.

Van Reese -- experiments in wireless signalling referred to.
Varley, Cromwell -- comments on Haworth's plan -- his own experiments in wireless signaIling.
Varley, S. A. -- observations of coherer principle -- his lightning-bridge.
Vibrations, ether and air -- table of.

Water, screening effect of -- first, second, third.
Waves, electric -- formation of -- velocity of -- reflection of -- along wires -- radiation and refraction of -- various lengths of.
Wehnelt -- his electrolytic contact-breaker referred to.
Welding -- electric.
Weston -- his relay and voltmeter -- his galvanometer referred to.
Wilkins, J. W. -- experiments in wireless telegraphy -- his detector -- its use in America -- anticipates the Weston relay.

Zickler, Prof. K. -- use of ultra-violet light for signalling by Hertz-waves.
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