Pronuntiatio means the dictation of a complete work to several scribes for its dissemination amongst interested specialists, often university students. At Prague University a professor could dictate his interpretations of any book from the Faculty of Liberal Arts or have them dictated from his text by a qualified pronunciator. It is uncertain if the pronunciatio record in the manuscript can be considered to be a secure proof of authorship of the recorded work. A summary of previously ascertained reports leads to the conclusion that apart from the record of the treatise of M. Jan Rokycana De quinque prioribus sacramentis, no other designated pronuntiatio involved an author dictating his own work. It is evident that records of such pronunciatios are for the most part definitely not proof that an author has dictated his own work and that without further examination of the creation and content of a work they are not enough to establish authorship.