KEY AND INDEX 



taneously with Franklin that some clouds were 

 charged with positive and others with negative 

 electricity. He first showed the compressibility 

 of water, and measured the quantity of electric- 

 ity stored in Leyden jars. 



Carnot, Sadi, iii, 255. Born at Paris, 1796; 

 died at Paris, 1832. French physicist. Served 

 until 1828 in the Corps of Engineers, where he 

 found time for research, and worked over the 

 general theory of the heat engine. His works 

 mark the beginnings of the science of thermo- 

 dynamics. 



Carpenter, William B., iv, 122. Born at Exe- 

 ter, England, 1813 ; died at London, 1885. Eng- 

 lish physiologist. Graduate, Edinburgh, 1839, 

 wrote many books on physiology. Registrar, 

 London University, 1856-1879. Made valuable 

 contributions to the subject of ocean circulation. 



Cartwright, Dr. Edmund, ix, 44. Born at 

 Marnham, Nottingham, England, April 24, 1743; 

 died at Hastings, England, Oct. 30, 1823. An 

 English clergyman who devoted much time to 

 mechanical inventions. His greatest invention, 

 the power loom, revolutionized weaving. 



Cassini, Dominic, iii, 13. Born near Nice, 

 1625; died at Paris, 1712. Italian-French as- 

 tronomer. Professor of Astronomy at Bologna, 

 and afterward director Paris Observatory, which 

 post was held by the family for four generations. 

 His work was principally connected with obser- 

 vations on the planetary system, orbits, etc. He 

 assisted in showing the earth to be a spheroid. 



Caus, or Caulx, Salomon de, vi, 83. Born at 

 Dieppe, 1576; died at Paris, June 6, 1626. French 

 engineer. In 1615 he published a work entitled 



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