Like his countryman and contemporary Benjamin Franklin, Benjamin Thompson (later Count Rumford) aimed by his inventions and scientific research to increase the degree of comfort in daily life. During fourteen years spent in Munich, he made important reforms in the city's public service and social welfare institutions; he also introduced improvements in the hospitals and workhouses in Ireland, England, and Italy. His goals were practical, and his contributions to our knowledge of the nature of heat were as valuable as Franklin's to our knowledge of electricity. Rumford believed heat to be a...