ind precisely the ratio of the circumference to the
diameter."

[44] This is the Paris edition: "Parisiis: ex officina Ascensiana anno
Christi ... MDXIIII," as appears by the colophon of the second volume to
which De Morgan refers.

[45] Regiomontanus, or Johann Mueller of Koenigsberg (Regiomontanus), was
born at Koenigsberg in Franconia, June 5, 1436, and died at Rome July 6,
1476. He studied at Vienna under the great astronomer Peuerbach, and was
his most famous pupil. He wrote numerous works, chiefly on astronomy. He is
also known by the names Ioannes de Monte Regio, de Regiomonte, Ioannes
Germanus de Regiomonte, etc.

[46] Henry Cornelius Agrippa was born at Cologne in 1486 and died either at
Lyons in 1534 or at Grenoble in 1535. He was professor of theology at
Cologne and also at Turin. After the publication of his _De Occulta
Philosophia_ he was imprisoned for sorcery. Both works appeared at Antwerp
in 1530, and each passed through a large number of editions. A French
translation appeared in Paris in 1582, and an English one in London in
1651.

[47] Nicolaus Remegius was born in Lorraine in 1554, and died at Nancy in
1600. He was a jurist and historian, and held the office of procurator
general to the Duke of Lorraine.

[48] This was at the storming of the city by the British on May 4, 1799.
From his having been born in India, all this appealed strongly to the
interests of De Morgan.

[49] Orontius Finaeus, or Oronce Fine, was born at Briancon in 1494 and
died at Paris, October 6, 1555. He was imprisoned by Francois I for
refusing to recognize the concordat (1517). He was made professor of
mathematics in the College Royal (later called the College de France) in
1532. He wrote extensively on astronomy and geometry, but was by no means a
great scholar. He was a pretentious man, and his works went through several
editions. His _Protomathesis_ appeared at Paris in 1530-32. The work
referred to by De Morgan is the _Quadratura circuli tandem inventa &
clarissime demonstrata_ ... Lutetiae Parisiorum, 1544, fol. In the 1556
edition of his _De rebus mathematicis, hactenus desideratis, Libri IIII_,
published at Paris, the subtitle is: _Quibus inter caetera, Circuli
quadratura Centum modis, & supra, per eundem Orontium recenter excogitatis,
demonstratus_, so that he kept up his efforts until his death.

[50] Johannes Buteo (Boteo, Buteon, Bateon) was born in Dauphine c.
1485-1489, and died in a cloister in 1560 or 15