Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 50
inwhich the hole has been made. SIGNALS TO THE ENGINE ROOM The telegraph signals on the bridge arestill another safeguard, although they are alsoused for the sake of convenience in dockingthe steamer. These signals consist of drum-shaped boxes mounted on stands, each witha lever, which passes over… … I The Telegraph Signals to the Engine Room. left, and so on. In starting one of thesegreat boats, before the great engines are setin full motion for the long trip and the shipanswers her helm, the machinery may be con-trolled instantly by this telegraph. In theevent of danger should the steering…
Children's literature
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