BIOGRAPHICAL INDEX 



"Causes of Kinetic Energy," in which He de- 

 scribed an apparatus for forcing up water by a 

 steam fountain. For this Arago claimed for 

 de Caus the invention of the steam-engine. 



Cavendish, Henry, iv, 15. Born at Nice, 1731 ; 

 died at London, 1810. English physicist and 

 chemist. Educated at Cambridge, devoted his 

 entire life to science, and having inherited con- 

 siderable means, remained unmarried and lived 

 the life of a recluse. Discovered composition of 

 water and devised a method for determining 

 density of earth. Made many investigations of 

 properties of carbonic acid gas. 



Celsius, Anders, vi, 14. Born at Upsala, 

 1701 ; died at Upsala, 1744. Swedish astronomer. 

 Professor at Upsala. Took part in the French 

 expedition, 1737, to measure a degree of the 

 meridian in the polar regions. Presented the 

 first idea of the centigrade thermometer. 



Celsus, Aulus Cornelius, ii, 40. Probably lived 

 in the reign of Tiberius. Latin physician. In- 

 troduced the Hippocratic systems among the 

 Romans. Wrote on other subjects besides med- 

 icine. His writings on surgery are especially 

 valuable, and contain much about the work and 

 opinions of the Alexandrian School. 



Chabas, Francois Joseph, i, 28. Born at Brian- 

 c,on, 1817; died at Versailles, 1882. French 

 Egyptologist, although engaged throughout life 

 in business as a wine merchant. Declined a 

 chair in the College de France. Became a lead- 

 ing authority on the ancient Egyptian language 

 and translated many of the hieroglyphic and 

 hieratic writings. 



Chambers, Robert, iv, 162. Born at Peebles, 



[771 



