[27] Vaughan: I, 281.
[28] Graux: 318.
[29] Graux: 319.
[30] Rashdall: II, pt. I, 77.
[31] Dict. of Nat. Biog.
[32] MSS. of it are extremely numerous. It was the second astronomical book to be printed, the first edition appearing at Ferrara in 1472. 65 editions appeared before 1647. It was translated into Italian, French, German, and Spanish, and had many commentators. Dict. of Nat. Biog.
[33] Whewell: I, 277.
[34] Blavatski: II, 29, note.
[35] Philo Judæus: Quis Rerum Divinarum Hæres. (IV, 7).
[36] Clement of Alexandria: Stromatum, Lib. V, c. 14, (III, 67).