Life of Count Rumford. 247 



< 1,000 to 2,430. At that date, therefore, the re- 

 ceiver of the prize, in accordance with the terms of 

 the trust, obtained a gold medal of the value of <6o, 

 one of silver, of the value of 4, and a money balance 

 of about 80.* 



It will not be inappropriate for me to copy here a 

 list of the awards of this medal which I have gathered 

 from the journals of the Royal Society. 



Date of Award. 



1802. Benjamin Rumford. For his various Discoveries re- 

 specting Light and Heat. (Phil. Trans. 1803.) 



1804. John Leslie. Experiments on Heat. 



1806. William Murdock. Publication of the Employment 

 of Gas from Coal for the Purpose of Illumination. 

 (Phil. Trans. 1809.) 



1810. Etienne-Louis Malus. Discovery of Certain Proper- 

 ties of Reflected Light. 



1814. William Charles Wells. Essay on Dew. 



1816. Humphry Davy. Papers on Combustion and Flame. 

 (Phil. Trans. 1817, 1818.) 



1818. David Brewster. Discoveries relating to the Polar- 

 ization of Light. (Phil. Trans. 1819.) 



1824. Augustin-Jean Fresnel. Development of the Undu- 

 latory Theory, as applied to the Phenomena of 

 Polarized Light : and for his various Important 

 Discoveries in Physical Optics. 



1834. Macedonio Melloni. Discoveries relative to Radiant 

 Heat. 



1838. James David Forbes. Experiments on the Polari- 

 zation of Heat. 



1840. Jean Baptiste Biot. Researches in and connected 

 with the Circular Polarization of Light. 



* For all the above particulars relating to the Rumford fund and medal, at the 

 disposal of the Royal Society, I am indebted to the admirable history of that venera- 

 ble institution, by Charles Richard Weld, Ejq. London. 1848. 



