The present volume of Bertalot's Incipitarium contains over 12,000 beginnings of Latin prose texts from the 14th to 16th centuries. Each incipit is also carefully identified as to author, sources and literature. The Incipitarium is a unique tool for the identification of classical texts and for the study of the spread of humanistic thought in Europe. It provides a continuation of the reference works of the Middle Ages by Walther and Schaller-Könsgen. Bertalot's Incipitarium will be a standard reference work of future humanistic research, as will the Iter Italicum of his pupil P.O. Kristeller, and it is of interest to anyone working in classical literature.