tic and Alchemical Writings of Paracelsus, trans, by A. E.
Waite, 2 vols., London, 1894. Pascal, Blaise. See vol. ii., p. 122.

Recit de la grande experience de Vequilibre de liqueurs, Paris, 1648.

Sawtree, John. See vol. ii., p. 124 ff.

Of the Philosopher's Stone, London, 1652. Swammerdam, John. See vol.
ii., p. 297.

Bibel der Natur, trans, into German, Leipzig, 1752. Sydenham, Thomas.
See vol. ii., p. 189.

His first work, Methodus curandi febres, was published in 1666. His last
work, Processus integri, appeared in 1692. His complete works, in Latin,
were published by the Sydenham Society, London, 1844, which published
also an English translation by Pr. R. G. Latham in 1848. There are
several other English translations.

Torricelli, Evanoelista. See vol. ii., p. 120.

Opera geometrica, Florence, 1644. Tycho Brahe. See vol. ii., p. 65.

De mundi aetherei recentioribus phonomenis, Prague, 1603. This has been
trans, into German by M. Bruns, Karlsruhe, 1894.

Vinci, Leonardo da. See vol. ii., p. 47.

Leonardo da Vinci, Artist, Thinker, and Man of Science, by Eugene Muntz,
2 vols., New York, 1892, is perhaps the most complete treatment of all
phases of Leonardo's work as a scientist as well as an artist. The older
French work, Essai sur les ouvrages physico-mathematiques de Leonard
de Vinci, by J. B. Venturi, Paris, 1797, is excellent. In German, H.
Grothe's Leonardo da Vinci als Ingenieur und Philosophy Berlin, 1874, is
good.

III.--MODERN COSMICAL AND TELLURIC SCIENCES

Agassiz, L. See vol. iii., p. 147.

Etudes sur les glaciers, Neuchatel, 1840. Arago, Francois J. D. See vol.
Hi., p. 67.

Ouvres (complete), if vols., Paris, 1854-1862. Arago's Meteorological
Essays, trans, into English, London, 1855. This has an introduction by
Humboldt.

Boscovich, Roger Joseph. See vol. iii., p. 293.

Theoria philosophio naturalis redacta ad unicam legem virium in natura
existentium, Vienna, 1758. Bradley, James. See vol. iii., p. 13.

Concerning an Apparent Motion Observed in Sotne of the Fixed Stars,
London, 1748, Phil. Trans., vol. xlv., pp. 8,9.

Cuvier,*Baron de. See vol. iv., p. 103.

Recherches sur les ossements fossiles de quadrupedes, 4 vols., Paris,
1812. (The introduction to this work was translated and published as a
volume bearing title of Theory of the Earth, New York, 1818.)

Delambre, Jean Baptiste Joseph. See vol. iii., p. 16.

Histoire d'astronomie, Paris, 1817-1821. This work contains