BIOGRAPHICAL INDEX 545 



CAVENDISH, THE HON. HENRY, b. 1731, Nice; d. 1810, 

 London 



1766. "Experiments on Factitious Air," 65; inflammable 



air, 66 ; density of gases, 67, 94 ; weight of fixed air 

 in marble, sal-volatile, pearl-ashes, etc., 69, 109 ; 

 solubility of fixed air in water, fixed air confined 

 over mercury, 70 ; gas set free from muriatic acid by 

 heat, 8 1 ; equivalent weights of potash and of marble, 

 310 

 1772 (?). Fixed air from burning charcoal, 95 



1767. "Experiments on Rathbone- Place Water," fixed air 



renders chalk soluble in water, 104 

 1784. " Experiments on Air." (A.C.R., III.) 

 Part I. 178 1. Pure water formed by burning common air and 

 inflammable air, 114 ; water produced by exploding 

 inflammable air with oxygen, 115, contains nitric 

 acid, 1 88 ; combining volumes of hydrogen and 

 oxygen, 330 ; gypsum formed by oxidation of sulphite 

 of lime, 164; charcoal deflagrated with nitre, 187 

 Part II. 1784. Nitric acid produced by sparking air, 189; 

 nitrous acid also formed, 199 ; residue of air not 

 absorbed (argon), 192 



1788. Reciprocal proportion in the neutralisation of acids, 310 



1798. "Experiments to Determine the Density of the Earth" 



CHAPTAL, JEAN ANTOINE CLAUDE (1756-1832). Calico-printer, 



and Professor of Chemistry at Montpellier 

 1791. Nitrogen, 45, 191. 

 CHARLES, J. A. C. (1746-1823) 



1787. Expansion of gases by heat, Charles's Law, 327 

 COURTOIS, BERNARD (1777-1838). Manufacturer of saltpetre 



1811. Discovery of iodine, 235 ; metallic iodides, 238 

 COWPER, RICHARD. Metals heated in dry chlorine, 533 

 CROOKES, SIR WILLIAM 



1861. Discovery of thallium, 475 

 1908. Atomic weights of B, Sc, Y, Yb, 483 

 CRUIKSHANK , WILLIAM (1745-1800), Chemist to the Royal 

 Artillery. 



1801. Composition of carbonic oxide, 140 ; carbonic oxide 

 prepared by reducing metallic oxides with charcoal, 

 139, and by the action of iron on carbonates, 140 

 Combination of hydrogen and chlorine, 223 



D ALTON, JOHN, ., 1766, nr. Cockermouth ; </., 1844, Man- 

 chester. For eight years teacher of Mathematics and Physics 

 at New College, Manchester. 



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