1839. Prof, of Medical Jurisprudence, Edin., 1822-32; of Mat. Med., 1832-77. Lord Rector, 1880. 'Treatise on Poisons,' 1829. 'Exact Measurement of Trees,' Trans. Bot. Soc. Edin. xiii.-xiv. Pritz. 62; R. S. C. i. 922; ix. 516; 'Life' (partly autobiog.), 1885-6; Trans. Bot. Soc. Edin. xiv. 266; Dict. Nat. Biog. x. 290. Christisonia Gardn.
Christy, William (c. 1807-39): b. Kingston-on-Thames?, c. 1807; d. Clapham Road, 42 July, 1839. Of Clapham Road. F.L.S., 1828. Visited Norway and Madeira. Contributed to Gibson's Fl. of Essex, and to Mag. Nat. Hist. 1833, 51; 1837, 25. Gave plants and books to Bot. Soc. Edinb. Jacks. 335; R. S. C. i. 925; Proc. Linn. Soc. i. 67; Gard. Mag. xv 536. Christya Ward & Harv. = Strophanthus DC.
Churchill, James Morse (fl. 1831). F.R.S.; F.L.S, 'Medical Botany,' 1831.
Clapperton, Hugh (1788-1827): b. Annan, Dumfriesshire, 1788; d. Chungary, near Sokota, 13 Ap., 1827. Captain, R.N. African explorer. In India, 1810-13; in Canada, 1814; in Africa, 1822-1827. PL in Herb. Mus. Brit., descr. by Brown in 'Narrative of Travels,' by Denham and Clapperton, 1826. Pritz. 63; Jacks. 346; 'Sketch,' prefixed to 'Journ. of 2nd Expedition,' 1829. Memoir by Rev. T. Nelson, 1830. Dict. Nat. Biog. x. 372. Portr. by Manton, engr. Lupton, in Lander's Journal of Expedition, 1829. Clappertonia Meisn. = Honckenya Willd.
Clark, William (fl. 1826) . Botanical artist. Drew and engraved plates for R. Morris's 'Flora Conspicua,' 1826. Clark, William Barnard (fl. 1840): b. Ipswich. M.D.; F.B.S. Ed. 1839. 'Flora of Ipswich,' in Mag. Nat. Hist. 1840, 124. R. S. C. i. 937.
Clarke, Benjamin (1813-90): b. Saffron Walden, Essex, 5 Sept., 1813; d. Hampstead, 4 Feb., 1890. M.R.C.S. F.L.S., 1845. ' New Arrangement of . . . Exogens,' 1851. 'New Arrangement of Phanerogam. Pl.,' 1866; ed. iii., 1888. "One of our most careful observers," Bentham. Journ. Bot. 1890, 84; R. S. C. i. 935; vii. 395.
Clarke, Rev- Sir Edward Daniel (1769-1822): b. Willingdon Vicarage, Sussex, 5 June, 1769; d. London, 9 Mar., 1822; bur. Jesus Coll. Chapel, Cambridge. Traveller and mineralogist. B.A. Cantab., 1790; M.A., 1794; LL.D., 1803. Collected in Scandinavia, 1799; Russia, 1800. Ordained, 1805. Vicar of Harlton, 1806, and Yeldham, 1810PI. presented to A. B. Lambert. Prof, of Mineralogy, Cambridge, 1808. 'Travels,' 1810-23. Pritz. 63; R. S. C. i 935; 'Life,' by Otter, 1825; Nich. Anec. iv. 389, 721: Nich. lllust. Dict. Nat. Biog. x. 421. Bust, by Chantrey, Jesus Coll. Portr. by Opie, engr. in 'Travels,' vol. i., and 'Life.'
Clarke, George (fl. 1840). Of Mahé, Seychelles. 'Coco d Mer,' Ann. & Mag. Nat. Hist. v. (1840), 422; and vi. (1841 408. Proc. Linn. Soc. i. 1849, 153; R. S. C. i. 936.
Clarke, Joshua (1805-90): b. Saffron Walden, 10 Ap., 1805;
