De balneis omnia quae extant apud Graecos, Latinos, et Arabas.

This is a collective work, incorporating the writings of more than 70 authorities, among whom may be mentioned Avicenna, Averroës, Avenzohar, Guainerio, Gesner, Savonarola, Petrus de Abano, and Maimonides. It gives an extensive history of balneology and an exact description of all the then known watering-places (about two hundred). Digital facsimile from the Internet Archive at this link.