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 176
etime of laying down the telegraph wires to Slough in1845, for a separate wire was then used for the returncurrent. Some years afterwards, indeed, Mr. Bainlaid claim to the discovery; but the fact that the con-ducting power of the earth had been previouslyapplied to the purpose by Dr. Steinheil has… … attending the proper protection and insulation of thewires. In the first instance, the plan of burying the wires in trenches wastried, but with very indif-ferent success, as the as-phaltum and other resin-ous substances with whichit was attempted to insu-late them were inadequatefor the purpose,…
Inventions
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