" (state).

[460] See Vol. I, page 382, note 12 {785}.

[461] See Vol. II, page 4, note 15.

[462] "In morals nothing should serve man as a model but God; in the arts,
nothing but nature."

[463] _Encyclopedie Methodique, ou par ordre de matieres._ Paris,
1782-1832, 166-1/2 volumes.

[464] See Vol. II, page 193, note 336.

[465] _Encyclopaedia Metropolitana; or, Universal Dictionary of Knowledge._
London, 1845, 29 volumes. A second edition came out in 1848-1858 in 40
volumes.

[466] See Vol. I, page 137, note 8 {286}.

[467] See Vol. I, page 80, note 5 {119}.

[468] De Morgan should be alive to satirize some of the statements on the
history of mathematics in the eleventh edition.

[469] John Pringle Nichol (1804-1859), Regius professor of astronomy at
Glasgow and a popular lecturer on the subject. He lectured in the United
States in 1848-1849. His _Views of the Architecture of the Heavens_ (1838)
was a very popular work, and his _Planetary System_ (1848, 1850) contains
the first suggestion for the study of sun spots by the aid of photography.

[470] See Vol. II, page 109, note 206.

[471] George Long (1800-1879), a native of Poulton, in Lancashire, was
called to the University of Virginia when he was only twenty-four years old
as professor of ancient languages. He returned to England in 1828 to become
professor of Greek at London University. From 1833 to 1849 he edited the
twenty-nine volumes of the _Penny Cyclopaedia_. He was an authority on Roman
law.

[472] A legal phrase, "Qui tam pro domina regina, quam pro se ipso
sequitur,"--"Who sues as much on the Queen's account as on his own."

[473] Arthur Cayley (1821-1895) was a fellow of Trinity College, Cambridge
(1842-1846) and was afterwards a lawyer (1849-1863). During his fourteen
years at the bar he published some two hundred mathematical papers. In 1863
he became professor of mathematics at Cambridge, and so remained until his
death. His collected papers, nine hundred in number, were published by the
Cambridge Press in 13 volumes (1889-1898). He contributed extensively to
the theory of invariants and covariants. De Morgan's reference to his
coining of new names is justified, although his contemporary, Professor
Sylvester, so far surpassed him in this respect as to have been dubbed "the
mathematical Adam."

[474] See Vol. II, page 26, note 56.

[475] See Vol. I, page 111, note 3 {207}.

[476] See Vol. I, page 87, note 6 {135}.

[477] Pierre Du