τοῦ εἰδέναι χάριν ἡ πραγματεία → knowledge is the object of our inquiry, the aim of our investigation is knowledge
ῥίψιμον: τό, (ῥίπτω) ἀποπάτημα, κόπρος, Ὀρνεοσόφ. 246 (σ. 579 Herch).