an apparatus for the distillation of mercury, created by Fortunato Florio. Florio was an expert in the field in the late XIX - early XX century. The book "Nouvelles machines pneumatiques à mercure, par M. Fortunato Florio" for example was published in French in 1904. A page from another book of Florio, in Italian, is shown on the plate at the right. Currently displayed at the entrance of the Chemistry and Industrial Chemistry Department of the University of Pisa