Note 45 — Chapter IV · DE INTERPRETATIONE.
Reading edition
Aristot. De Interpr. p. 23, a. 5. τοῦτο μὲν τούτου χάριν εἴρηται, ὅτι οὐ πᾶσα δύναμις τῶν ἀντικειμένων, οὐδ’ ὅσαι λέγονται κατὰ τὸ αὐτὸ εἶδος. ἔνιαι δὲ δυνάμεις ὁμώνυμοί εἰσιν· τὸ γὰρ δυνατὸν οὐχ ἁπλῶς λέγεται, ἀλλὰ τὸ μὲν ὅτι ἀληθὲς ὡς ἐνεργείᾳ ὄν, &c.
If we read the thirteenth chapter of Analytica Priora I. (p. 32, a. 18-29) we shall see that τὸ ἐνδεχόμενον is declared to be οὐκ ἀναγκαῖον, and that in the definition of τὸ ἐνδεχόμενον, the words οὗ μὴ ὄντος ἀναγκαίου are expressly inserted. When τὸ ἀναγκαῖον is said ἐνδέχεσθαι, this is said only in an equivocal sense of ἐνδέχεσθαι — τὸ γὰρ ἀναγκαῖον ὁμωνύμως ἐνδέχεσθαι λέγομεν.
On the meaning of τὸ ἐνδεχόμενον, translated above, in the table, “possible (logically) to be,” and its relation to τὸ δυνατόν, see Waitz, ad Organ. I. pp. 375-8. Compare Prantl. Gescht. der Logik, I. pp. 166-8.