Theory and practice of the electric telegraph; a manual for operators and students (1875)
Churchill, Charles Henry, d. 1904. [from old catalog] · Oberlin, Ohio, Sherman & bros. · leaf 22
he short dash, the long dash never beingused in combination, nor repeated except to repeat the letteror figure which it represents. NOTE 1. Instead of the sign for italic-, operators usually empha-size by spacing more widely the letters of a word. 2. The sign for parenthesis precedes and follows… … 1. The 3Iagnet.~l. What is a magnet? A certain ore of iron (first broight into notice near Mag-nesia in Asia) which has the property of attracting and hold-ing small pieces of iron is called the natural magnet or load-stone. 2. What is au artificial magnet? A bar of steel prepared for the purpose…
Telegraph
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