APPENDIX II 297 



writing doctrine of evolution by natural selection, 1844 ; 

 published Origin of Species, 1859. 



DAVY, [Sir] Humphry (1778-1829), F.E.S. ; Kt., 1812 ; 

 Bart., 1818 ; professor of chemistry, Eoyal Last., 1802 ; 

 president, Eoyal Soc., 1820-27. Chemical discoveries and 

 invention of safety lamp. 



DE LA BECHE, Sir Henry Thomas (1796-1855), Kt., 

 1848 ; director of Geological Survey, 1832 ; president, 

 Geological Soc., 1847. 



DEMAINBRAY, Stephen Charles Triboudet (1710-82), 

 tutor to George III when Prince of Wales, 1754 ; astronomer, 

 Kew Observatory, 1768-82 ; electrical researches. 



DEMAINBRAY, Eev. Stephen George Francis Triboudet 

 (1760-1854), son of preceding ; astronomer, Kew Observa- 

 tory, 1782-1840. 



DUDDELL, William du Bois (1872-1917), C.B.E., F.E.S., 

 consulting engineer ; president, Eontgen Soc. and Inst. of 

 Electrical Engineers ; Admiralty board of invention and 

 research ; inventions board, Ministry of Munitions. 



DUFF, Sir Mountstuart Elphinstone Grant (1829-1906), 

 G.C.S.I. (1886), P.C., F.E.S. ; M.P., 1857-81; under- 

 secretary for India, 1868-74, for the colonies, 1880-81 ; 

 governor of Madras, 1881-86 ; president, Eoyal Geographical 

 Soc., 1889-93. 



DUNCAN, Andrew (1773-1832), first professor of medical 

 jurisprudence, Edinburgh Univ., 1807-19 ; professor of 

 materia medica, Edinburgh Univ., 1821-32. 



DUNRAVEN AND MOUNT-EARL, Earl of [Edwin Eichard 

 Windham Wyndham-Quin, Viscount Adare] (1812-71), 

 F.E.S. ; M.P., 1837-51 ; succeeded as 3rd Earl (Irish 

 peerage), 1850 ; created Baron Kenry (U.K.), 1866 ; Kt. of 

 St. Patrick, 1866 ; assisted in foundation of Irish Archaeo- 

 logical Soc., 1840, and Celtic Soc., 1845 ; president, 

 Cambrian Soc., 1849 and 1869 ; archaeologist. 



EGERTON, Sir Philip de Malpas Grey (1806-81), F.E.S.; 

 M.P., 1830, 1835-81 ; trustee, B.A., 1862-81. Palaeon- 

 tologist. 



EHRENBERG, Christian Gottfried (1795-1876), professor 



