definitions et histoire. Mecanique machines de soulevement, principes de mecanique, appareils pour elever l'eau, orgue hydraulique, hodometre. Mecanique scorpion, baliste, reglage des machines de jet, machines de siege, art de la defense.
Marcus Vitruvius Pollio (born c. 80–70 BC, died after c. 15 BC) was a Roman military engineer under Julius Ceasar, generally attributed to be the sole author of the only extant major work from classical antiquity on architecture, De architectura, better known in English as The Ten Books on Architecture.