De thermis …libri septem. Opus ... in quo agitur de universa aquarum natura, deque differentiis omnibus, ac mistionibus cum terris, cum ignibus, cum metallis, de lacubus, fontibus, fluminibus, de balneis totius orbis, & de methodo medendi per balneas, deque lavationum simul atque exercitationum institutis in admirandis thermis Romanorum....

A comprehensive study of mineral waters, dealing with all the spas of the then-known world. Besides exhaustive coverage of the baths of antiquity and of Bacci’s own time, the work gives considerable attention to wines, especially in relation to their medical use. This work was reprinted several times, into the 18th century. Digital facsimile of the first edition from Google Books at this link.