The first textbook of surgical pathology. It treats of all kinds of swelling under the term “abscess” and describes neoplasms of the genital organs and sarcoma of bones. Tumors of the breast are classified into four groups, the section devoted to them being one of the most important in the book. It also contains the first description of infantile hydrocephalus. De recondita abscessuum natura was also the first book to include illustrations of lesions with the text. Digital facsimile from Google Books at this link.

One of the most important of the early works on comparative anatomy. It includes the Anatomia porci, attributed to Copho of Salerno. Severinus dissected many animals and was convinced that the microscope would throw light on comparative anatomy. Digital facsimile from the Internet Archive at this link.