TYNDALL, JOHN. - THE FOG-SIGNAL EXPERIMENTS.

On the Atmosphere as a Vehicle of Sound. Received February 5, - Read February 12, 1874.

(London, Taylor and Francis, 1874). 4to. No wrappers as extracted from "Philosophical Transactions" 1874. Vol. 164. Pp. 183-244. Clean and fine.

First printing of a classic paper on the theory of sound propagation, containing the famous fog signal experiments aiming at establishing fog-signals on the Coast of England. The investigations started from South Foreland near Dover at the signal-station.

Order-nr.: 42986