51] Baldassare Boncompagni (1821-1894) was the greatest general collector
of mathematical works that ever lived, possibly excepting Libri. His
magnificent library was dispersed at his death. His _Bulletino_ (1868-1887)
is one of the greatest source books on the history of mathematics that we
have. He also edited the works of Leonardo of Pisa.

[652] He seems to have attracted no attention since De Morgan's search, for
he is not mentioned in recent bibliographies.

[653] Joseph-Louis Vincens de Mouleon de Causans was born about the
beginning of the l8th century. He was a Knight of Malta, colonel in the
infantry, prince of Conti, and governor of the principality of Orange. His
works on geometry are the _Prospectus apologetique pour la quadrature du
cercle_ (1753), and _La vraie geometrie transcendante_ (1754).

[654] See note 119, page 80.

[655] See note 120, page 81.

[656] Lieut. William Samuel Stratford (1791-1853), was in active service
during the Napoleonic wars but retired from the army in 1815. He was first
secretary of the Astronomical Society (1820) and became superintendent of
the Nautical Almanac in 1831. With Francis Baily he compiled a star
catalogue, and wrote on Halley's (1835-1836) and Encke's (1838) comets.

[657] See Sir J. Herschel's _Astronomy_, p. 369.--A. De M.

[658] Captain Ross had just stuck a bit of brass there.--A. De M.

Sir James Clark Ross (1800-1862) was a rear admiral in the British navy and
an arctic and antarctic explorer of prominence. De Morgan's reference is to
Ross's discovery of the magnetic pole on June 1, 1831. In 1838 he was
employed by the Admiralty on a magnetic survey of the United Kingdom. He
was awarded the gold medal of the geographical societies of London and
Paris in 1842.

[659] John Partridge (1644-1715), the well-known astrologer and almanac
maker. Although bound to a shoemaker in his early boyhood, he had acquired
enough Latin at the age of eighteen to read the works of the astrologers.
He then mastered Greek and Hebrew and studied medicine. In 1680 he began
the publication of his almanac, the _Merlinus Liberatus_, a book that
acquired literary celebrity largely through the witty comments upon it by
such writers as Swift and Steele.

[660] See note 642 on page 296.

[661] William Woodley also published several almanacs (1838, 1839, 1840)
after his rejection by the Astronomical Society in 1834.

[662] It appeared at London.

[663] The first edition appea