κατὰ τὸ φιλόκαλον πειραθέντα κατανοῆσαι → see by working out the calculation
exăgĭtātor: ōris, m. exagito, II. B. 1.,
I one who severely blames, a censurer: omnium rhetorum, Cic. Or. 13, 42.
exăgĭtātŏr, ōris, m. (exagito), celui qui pourchasse, censeur infatigable : Cic. Or. 42.