A new system of machine telegraphy
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Patrick B. Delany
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Article
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1896
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Elsevier Science
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English
β 557 KB
In telegraphy, as in nearly all other industries, there are two ways of working : by hand, and by machine. Naturally the hand method comes first. It was so in telegraphy, and it has continued with wonderful tenacity. Even now, probably 9 Β° per cent. of the telegraph business of the world is done by