Lieut. G.R.R. Savage, R.E., writing from Roorkee, North-West Provinces, India, sends us an account of some interesting experiments he has been making on long-distance telephones. He constructed telephones expressly for long-distance work, and succeeded in getting a bugle-call heard distinctly over 400 miles of Government telegraph line .... ["Nature," May 16, 1878]
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