This second volume on technology is mainly devoted to three prizewinning memoirs, answering questions related to ship-building which were proposed by the French Académie Royale des Sciences in the years 1737, 1755, and 1757 (St.28, St.47, St.48). The volume hosts two further items: a popularizing text on astronomy from 1723 (W), and the theory of the spiral pump, a technical item from 1772 (St.65).