Instantly, the ship shone like the polished mirror of a heliograph.
He had also been corroborated by a man who had seen the man who took it down from the heliograph.
The heliograph would be useless in stormy weather or in fog.
The Hussars left behind a Colt-Maxim and a heliograph for our usage.
If there is no sun I cannot heliograph and I have a host of signals to look up and get ready.
To this shot the heliograph flashed a cordial expression of approval.
That meal done, he sat beside his heliograph to await the time.
And the glass of water she lifted pierced like a heliograph into the room.
Far across the plains I saw a flashing light, as of a heliograph.
Well, I guess that's because the heliograph is so much more secret.