Most of the Lorraine collections are displayed in the exhibition rooms on the second floor of the Istituto e Museo di Storia della Scienza in Florence. They mainly comprise the scientific instruments commissioned or purchased by the Grand Duke of Tuscany Peter Leopold (1747-92) for the Museo di Fisica e Storia Naturale in Florence. Even during the first half of the 19th C., the collections were significantly expanded through new acquisitions. In addition to electrostatic machines (Room XIV), pneumatic machines (Room XV), mechanical instruments (Sale XVI and XVII), and some microscopy instruments (Room VIII), the Lorraine collections included the anatomical waxes and terracottas and the surgical instruments from the Ospedale di Santa Maria Nuova in Florence (Room XVIII). The pharmaceutical objects (Room XIX), the chemistry instruments from Peter Leopold's personal laboratory (Room XX), and some measuring instruments (Room XXI) form a noteworthy section of the collections, together with mechanical clockwork instruments (Room XII).