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alignment American Helio-Telegraph Army and Navy ART OF SIGNALLING astronomical telescope Attach the register attachments for lanterns centre clamp code of signals dash and dot day and night distant station dots and dashes double signal entire apparatus entire instrument error facing the sun finger key Finley FINLEY'S HELIOTROPE FLASH SIGNALS forms of heliograph four mirrors greater magnitude greater or less hand sun mirror helio Instrument facing latitude and departure less magnitude letter longer or shorter manipulation messages with absolute military purposes mirror bars Morse Army movable mirror adjusted Navy code oil-can opposite station Place plumb-line and bob posi position present forms quired range readily receiver reflections register for recording reveal the mirrors screw attachment secured shorter exposition sighting rod sighting spot signal carrier bar Signal Corps Signal Light Company simultaneous exposition speech or messages symbols of greater telescope holder telescope quadrant tion transmission transmit signals U. S. Army upper cap
Page 4 - ... can well be doubted whether the great campaign, which exposed the great weakness of the enemy and propagated the seeds of the coming dissolution of the rebellion, could have been executed for months later. In connexion with this transaction, General Sherman states: "In several instances this corps (signal corps) has transmitted orders and brought me information of the greatest importance that could not have reached me in any other way. I will instance one most remarkable case. When the enemy...