Every one knows how very convenient the telegraph is, but there are
not many who think how wonderful it is that we can send a message in a
few seconds of time to a distant place, even though it were thousands
of miles away. And yet, though the present system of telegraphing is a
wonderful one, the method of sending a telegram is simple enough. The
apparatus that is used in sending a telegram is as follows:
The Battery.
The Wire.
The Telegraph Key.
The Sounder.
The different kinds of electric batteries will be mentioned afterward,
so we will not stop now to describe them, but simply state that a
battery is used to produce the necessary electricity. As you all know
what wire is, there is no necessity of describing it further.