This volume presents, for the first time, a critical edition of the works of the early modern English physician John Cotta. No mere country doctor, Cotta spoke out eloquently and courageously against what he saw as abuses in medicine and injustices in the prosecution of witchcraft. Read by important thinkers such as Robert Burton in England, and by colonial administrators in New England, Cotta helped shape two of the most important debates of his time. Included are the full texts of Cotta’s Short Discovery and The Trial of Witchcraft, both books painstakingly edited and annotated. Also included is a detailed introduction dealing with Cotta’s medical and religious contexts, his extensive learning and much more.