[206] Charles Knight (1791-1873) was associated with De Morgan for many years. After 1828 he superintended the publications of the Society for the Diffusion of Useful Knowledge, to which De Morgan contributed, and he edited the _Penny Cyclopedia_ (1833-1844) for which De Morgan wrote the articles on mathematics. [207] Sir William Hamilton. See Vol. I, page 112, note 7 {211}. [208] Adam Smith (1723-1790) was not only known for his _Wealth of Nations_ (1776), but for his _Theory of Moral Sentiments_ (1759), published while he was professor of moral philosophy at Glasgow (1752-1764). He was Lord Rector of the university in 1787. [209] See Vol. I, page 332, note 4 {709}. [210] "Whip." [211] "Terrible lash." [212] "An accomplished fact [an accomplished fault]." [213] See _Extracts from the Diary and Letters of Mrs. Mary Cobb_, London, 1805. [214] "Gentle in manner." [215] "Brave in action." The motto of Earl Newborough was "Suaviter in modo, fortiter in re." [216] "Reduction to an absurdity," a method of proof occasionally used in geometry and in logic. [217] "He has lost the right of being moved (struck) by evidence." [218] For _radix quadratus_. The usual root sign is supposed to be derived from _r_ (for radix), and at one time _q_ was commonly used for square, as in Viete's style of writing Aq for A^2. [219] The Garde Douloureuse was a castle in the marches of Wales and received its name because of its exposure to attacks by the Welsh. [220] "Out of the fight." [221] "Hidden." [222] John Cam Hobhouse (1786-1869), Baron Broughton, was committed to Newgate for two months in 1819 for his anonymous pamphlet, _A Trifling Mistake_. This was a great advertisement for him, and upon his release he was at once elected to parliament for Westminster. He was a strong supporter of all reform measures, and was Secretary for War in 1832. He was created Baron Broughton de Gyfford in 1851. [223] Thomas Erskine (1750-1823), the famous orator. He became Lord Chancellor in 1806, but sat in the House of Commons most of his life. [224] The above is explained in the MS. by a paragraph referring to some anagrams, in one of which, by help of the orthography suggested, a designation for this cyclometer was obtained from the letters of his name.--S. E. De M. [225] "A personal verb agrees with its subject." [226] See Vol. I, page 326, note 1 {700}. [227] See Vol. I, page 326, note 2 {701}. [228] Apparently unknown to biographers. [229] The _Bibliotheca Mathematica_ of Ludwig Adolph Sohncke (1807-1853), professor of mathematics at Koenigsberg and Halle, covered the period from 1830 to 1854, being completed by W. Engelmann. It appeared in 1854. [230] See Vol. I, page 392, note 2 {805}. [231] See Vol. I, page 43, note 7 {32}. [232] See Vol. II, page 91, note 187.