What roman author described the technique of Opus quadratum?
Opus quadratum Opus quadratum is an ancient Roman construction technique, in which squared blocks of stone of the same height were set in parallel courses, most often without the use of mortar. The Latin author Vitruvius describes the technique.
Hermeneumata The Hermeneumata (Greek: Ἑρμηνεύματα ; also known as the Hermeneumata Pseudodositheana) are anonymous instructional manuals written in the Third century to teach the Greek language to Latin-speaking people in the Roman Empire, and to teach Latin to Greek-speakers. The word "Hermeneumata" means "translation" or "interpretation".