Prev. 100Electrophoric Action1 Electrophorous1 Electro-physiology1 Electroplating1 Electroplating Dynamo1 Electro-pneumatic Signals1Electropoion Fluid1 Electro-positive. adj.1 Electro-puncture1 Electro-receptive. adj.1 Electroscope1 Electrostatic Accumulator1 Electrostatic Attraction and Repuls...1 Electrostatic Circuit1 Electrostatic Equipotential Surface1 Electrostatic Field of Force1 Electrostatic Force1 Electrostatic Induction1 Electrostatic Lines of Force1 Electrostatic Mutual Induction1 Electrostatic Quantity1 Electrostatic Refraction1 Electrostatic Series1 Electrostatic Stress2 Electrostatic Telephone1 Electrostatic Voltmeter1 Electrostatics1 Electro-therapeutics or Therapy1 Electrotherapy2 Electro-thermal Equivalent1 Electrotonic State1 Electrotonus1 Electrotype1 Elegant1 Elegant extracts1 Elegy1 Elegy Written in a Country Churchya...1 Ele-lendisch1 Element of a Battery Cell1 Element of Battery1 Elements1 Elendisch1 Elenge1 Elengelich1 Eleonora Falcon1 Elephant6 Elephant seal1 Elephants1 Elephants in Thailand1 Elephant’s trunk1 Elephas1 Eleusis1 Elevated1 Elevation1 élève1 Elf3 Elf-lock1 Elf-queen1 Eli (biblical figure)1 Elias Ashmole1 Elias’ Method Magnetization1 Eliche1 Elihu Burritt1 Elijah3 Elijah Fenton1 Elim1 Eliot Bartholomew Geo Warburton1 Elis1 Elisha1 Elissa1 élite1 Elivagar1 Elixir1 Eliz.1 Eliza Cook1 Eliza Hayward1 Eliza Hessel6 Eliza Lynn Linton1 Eliza Stephenson1 Eliza Tabor1 Eliza Wilkinson1 Elizabeth Barrett Browning4 Elizabeth Carter1 Elizabeth Cleghorn Gaskell1 Elizabeth Ferguson1 Elizabeth Fry7 Elizabeth Gordon, Duchess of Gordon6 Elizabeth Hamilton1 Elizabeth I of England44 Elizabeth Inchbald1 Elizabeth Missing Sewell1 Elizabeth Montagu1 Elizabeth Rundle Charles1 Elizabeth Sara Sheppard1 Elizabeth Steele1 Elizabeth Zane1 Elizabeth, Grace, and Rachel Martin1 Elizabethan Period1 Elk1 Elkanah Settle1 Prev. 100

Electro-pneumatic Signals

Signals, such as railroad signals or semaphores, moved by compressed air, which is controlled by valves operated by electricity. The House telegraph, which was worked by air controlled by electricity, might come under this term, but it is always understood as applied to railroad signals, or their equivalent.