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.
Didascaliae Didascaliae are a compilation of production notices for several stage works of ancient Rome. This incomplete record was probably compiled some time around the 1st century BC, and contains notes on the "Stichus" and "Pseudolus" of Plautus (in Manuscript A) and all the plays of Terence (in the manuscript and in the commentary by Aelius Donatus), after which they were sometimes called "Didascaliae Terentianae". The notes contain information about the first performance of the works, games that were played there, the plays' directors and producers (such as Lucius Ambivius Turpio), musical composers, the nature of the musical score, the Roman consuls that year, "et cetera". In some cases, details about subsequent revivals are also preserved.