Great facts : a popular history and description of the most remarkable inventions during the present century (1860)
Bakewell, Frederick C. (Frederick Collier), 1800-1869 · New York, D. Appleton and company · leaf 173
This is effected by an electro-magnetic regulator, which being put in action by oneinstrument, governs the movements of the distant in-strument with the greatest exactness, as proved at adistance of 300 miles. It might be supposed, as the points must traverse i THE ELECTRIC TELEGRAPH. 157 several… … in two seconds, and at that rate three lines of writing,containing sixty words, would be copied in one min-ute, which is three times as fast as an expeditiouspenman can write. The advantages proposed to be gained by the copy-ing telegraph, in addition to its increased rapidity oftransmission, are…
Inventions
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