RUMFORD, BENJAMIN COUNT (BENJAMIN THOMPSON).

An Account of a curious Phenomenon observed on the Glaciers of Chamouny; together with some occasional Observations concerning the Propagation of Heat in Fluids. Read December 15, 1803.

(London, W. Bulmer and Co., 1804). 4to. No wrappers as extracted from "Philosophical Transactions" 1804 - Part I. Pp. 23-29.

First printing of the paper in which Rumford describes the observations performed on an excursion together with Pictet to the Glaciers of Chamouny where they observed the Sea of Ice (Mer de Glace). Here, and before making ‘direct experiments’ Rumford observed the melting ice and commented: "I have ascribed the melting of the ice below the surface of the ice-cold water to currents of water slightly warmer, and consequently slightly heavier, which descend from the surface to the bottom of the ice-cold water".

Order-nr.: 49834