Discontinue use of your telegraph system. Perhaps though you will still be able to continue to send and receive messages despite having disconnected your power

Discontinue use of your telegraph system. Perhaps though you will still be able to continue to send and receive messages despite having disconnected your power supply. [1] [1] https://babel.hathitrust.org/cgi/pt?id=uva.x001679510&seq=403 https://babel.hathitrust.org/cgi/pt?id=uva.x001679510&seq=40...