Chapter 32. Περι Ἐνιαυτοῦ, Πόσος Ἑκάστου Τῶν Πλανξτῶν Χρόνος, Καὶ Τίς Ὁ Μέγας Ἐνιαυτός

In the final chapter of Book II our doxographer leaves the subject of the moon and returns to that of the other heavenly bodies, recording the length of the planetary revolutions and adding some doxai on the length of the so-called Great year. The chapter is well preserved in both P and S, but there is no trace of it in T. Taking the other witnesses into account, we note first that there is once again considerable variation in the chapter's title. S includes the chapter in an early chapter of his anthology devoted to the nature and cause of time. Ach gives three views on the luni-solar year, of which two are identical with those found in A. Before we draw conclusions on the structure of the chapter, it will be worthwhile to examine the doxographical parallels. Various sources give accounts of the length of the planetary revolutions.Keywords: Aetius Placita; cause of time; doxographical parallels; Great year; heavenly bodies; luni-solar year; moon; nature; planetary revolutions

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