κρῖναι δὲ λόγῳ πολύδηριν ἔλεγχον ἐξ ἐμέθεν ῥηθέντα → judge by reason the too much contested argument which has been given by me
διαλεγῆναι: Arst. inf. aor. 2 к διαλέγομαι.