An American of wide-ranging interests and overflowing energy, Benjamin Thompson applied his scientific and technical knowledge to the improvement of public service and welfare institutions in Bavaria (a service for which he was made Count Rumford), Ireland, England, and Italy. In the process, he made important discoveries in physics. In this new edition of Rumford's Works, Sanborn Brown has arranged his writings according to subject matter: this first volume contains his papers on the nature of heat, and includes one paper which has never before been published in English.

The...