Morse system extending throughout the world.

That night I made my headquarters in a wrecked church, from the tower of which I sent back signals in the morse code by means of a lamp.

He could hear the morse signals on the buzzer plain enough, but the voice was faint and indistinct.

So strong was the temptation, and so sweet did that morse taste, that Mark felt he might not refrain unless he had something to occupy his mind for a few minutes.