The Geography of Strabo. Trans, by H. C. Hamilton and W. Falconer, 3 vols., London, 1857. There are several other editions of Strabo's work available in English.

Tertullian. See vol. i., p. 195.

Apologeticus. Theophrastus. See vol. i., p. 188.

Utpivlaroplas, On the History of Plants. Written in 10 books. This is one of the earliest works on botany which have come to us. It was largely used by Pliny. In complete works, Schneider, Leipzig, 1818-1821, 5 vols. On Plants, edited by Wimmer, Breslau, 247

1842-1862. On Plants, edited by Slackhouse, Oxford, 1814. atria, On the Causes of Plants, This was originally in 8 books, of which 6 are now existant. Bibliog. vid. History of Plants.

II.—PERIOD COVERED BY VOLUME II.

Albategnius, Mohammed bbn Jabir. See vol. ii., p. 15.

The original MS. of his principal work, Zidje Sabt, is in the Vatican. A Latin translation was first published by Plato Tiburtinus at Nuremberg, in 1537, under the title De scientia stellarunt. Various reprints of this have been made. Albertus Magnus. See vol. ii., p. 127.

Philosophic* Naturalis Isagoge, Vienna, 1514. Alhazen (full name, Abu Ali al-Hasan Ibn Alhasan). See vol. ii., p. 18.

Only two of his works have been printed, his Treatise on Twilight and his Thesaurus opticae, these being available in Michael Casiri's Bibliotheca Arabico-Hispana Escuri-alensis, 2 vols., Madrid, 1760-1770.