Note 88 — Chapter VII · ANALYTICA POSTERIORA I.
Reading edition
Analyt. Post. I. xxxi. p. 88, a. 6: τὸ δὲ καθόλου τίμιον, ὅτι δηλοῖ τὸ αἴτιον· ὥστε περὶ τῶν τοιούτων ἡ καθόλου τιμιωτέρα τῶν αἰσθήσεων καὶ τῆς νοήσεως, ὅσων ἕτερον τὸ αἴτιον· περὶ δὲ τῶν πρώτων ἄλλος λόγος.
By τὰ πρῶτα, he means the ἀρχαὶ of Demonstration, which are treated especially in II. xix. See Biese, Die Philos. des Aristoteles, p. 277.