American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 363
shown by the line e. The leak lis connected at the point indicated and a current flows through it in a positive di-rection. When the positive pole of the battery at b is jjlaced to the line, the pointto which the leak l is connected at a is raised slightly, as indicated by the dottedlines, but the… … the direction of the current is obviously reversed through the leak, but the only effectof a reversal of the distant battery, which may be represented by the dotted lines,will be, as before, to increase, in a negative sense, the existing potential at the pointto which the leak is connected, and…
Telegraph
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