In this work, the author contributes to our understanding of the formation of medicine as a university discipline by explaining how a collection of medical works known as the Ars medicine ("The Art of Medicine") came to form the basis of medical teaching in the early universities. Based upon extensive manuscript research, this study explains how the collection evolved to suit the needs of university medical teaching and how it helped to establish Hippocratic-Galenic medicine as the new medical othodoxy. Focusing upon the medical faculty at the University of Paris, the book investigates how medical texts were produced, who owned them and how they were used in the classroom. It thus explains how language was used, how textual authority was created and utilized, and how text-based knowledge was sanctioned in the classroom.