Baille, Jean Baptiste Alexandre, b. 1841, Armstrong, John W., ed · New York, Scribner, Armstrong, and co. · leaf 104
expedient, which re-sults naturally from the existence of the telegraph,there is at each station an instrument that an-nounces the approach of each train. This contrivance is a bell placed on a post at themost frequented part of the landing-place. A wire RAILWAY TELEGRAPHS. 83 is attached to this… … electric current isstopped. By thismeans it is knownthat the journey hasbeen accomplished.When the train startsafresh, a second sta-tion-master in likemanner sets the bellof the indicator at thenext station ringing.And so the process isrepeated. There is, however, another me- Railway Indicator.…
Electricity
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