[326] Harvey: On Generation, LXXI, Syd. 505, l. 18 to 506, l. 16; Op. Omn. 526, l. 20 to 527, l. 20.

[327] Harvey: On Generation, LXXI, Syd. 508, l. 22-38; Op. Omn. 529, l. 24 to 530, l. 5.

[328] The sources, contained in Aristotle's own works, of the foregoing brief sketch of his conception of the universe, are as follows: On Heaven, the whole of the treatise; On Generation and Corruption, the whole of the treatise; Physics, Book IV, chapter 14, 223b, 15 to 224a, 2; Meteorology, Book I, chapters 1, 2, 3, and 9; Metaphysics, Book XI, chapter 7, 1072b, 28-30, and chapter 8; Nicomachean Ethics, Book VI, chapter 7, 1141a, 33 to b, 2; On the Parts of Animals, Book I, chapters 4 and 5, 644b, 20-25; Book II, chapter 10, 656a, 3-8; On the Generation of Animals, Book IV, chapter 10. The treatise entitled "On the Universe: To Alexander," is not a genuine work of Aristotle. See V. Rose: De Aristotelis Librorum Ordine et Auctoritate, 90-100. Besides the foregoing Aristotelian texts, see Prantl's note, number 37, on pages 303-307 of his edition of Aristotle's treatise On Heaven and On Generation and Corruption, and the references to other writers contained in the said note.

[329] Aristotle: On Heaven, 269a, 5-7.

[330] Aristotle: Meteorology, 339b, 25-26.

[331] Aristotle: On Heaven, 269a, 30-32.

[332] Aristotle: On Heaven, 269b, 15-17.

[333] Aristotle: On Heaven, 270b, 1-5 and 20-24. Aristotle accepts the derivation of αἱθέρα from ἀεὶ θεῖν. Modern philology rejects this.

[334] Aristotle: Meteorology, 339b, 17-19.

[335] Aristotle: On Heaven, 289a, 13-16.