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Page:Popular Science Monthly Volume 56.djvu/378

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364
POPULAR SCIENCE MONTHLY.

with two wires and no ground return, is cumbersome, vexatious, and unsightly. The storage battery is more or less experimental in its nature. The electro-magnetic contact systems, with plates set in the pavement at stated intervals, make no pretense of avoiding electrolytic troubles. The compressed-air motor has yet to receive popular approval.

PSM V56 D0378 Depth of electrolytic action on lead pipe.png
Lead Service Pipe showing the Depth to which the Pipe has been affected. In this instance the outer covering consists of a salt of lead, having no strength whatsoever.

There seems to be a mistaken impression abroad that the railway companies are indifferent to this subject. So far as my experience and information go, this is not the case. They are only too anxious to find a remedy—not, as some electricians have stated, to save their coal-pile, for energy is wasted in forcing the electricity back to the power house, no matter what the path, but because they fear that at some future date the taxpayer, the corporation, and the municipality will band together, present overwhelming bills for damages,