Our pilot gave him thanks with three blasts of the steam-whistle.
In 1836 the steam-whistle had not yet been introduced on the boats of the western rivers.
Imagine the Morse alphabet applied to a steam-whistle, which is often heard five miles.
In the meantime, he had much to do and drove his men hard, until a steam-whistle hooted and they threw down their tools.
Right to the minute the steam-whistle came to us, borne clearly on the wind across the intervening miles of rock and snow.
