Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 708
stant pi i not di pon the speed with which the electricity travels, which the human an perform the proper manipulations. This, in actual practice, as exp rience with t average of more than eighty 1 ainute. In trches in electricity have shown, that when tlat by the finger, it Hies to its i with the… … i 098 TELEGRAPH.
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.