series of monographs on medicine that are of special
interest. He wrote on diet, _De Ordine Cibandi;_ on diagnosis, _De
Cognitione Naturae Aegritudinis_ (literally on the recognition of the
nature of disease), and on stone in the kidney, _De Lapide Renum._

Another of the physicians of Pope Leo X was Bartholomeo of Pisa. He is
mentioned by Carolus Cartharius in the _Athenaeo Romano_ as a
physician of great skill. He was professor in the Roman Archigymnasium
and is the author of an Epitome of the Theory and Practice of Medicine
issued at Florence early in the sixteenth century. This epitome is
said to have been of special service because it contained in brief a
great deal of information gathered from books and illustrated by
Bartholomeo's own experience.

Still another of the physicians of Pope Leo X was Bernardinus
Speronius, a Paduan by birth and a professor of high esteem in the
University of Padua. Angelus Portenarius in his work _Della Felicita
di Padova_ says of him that he was a physician of such great skill and
reputation that Pope Leo selected him for his physician while he was
lecturing at Padua, and Bernardinus felt himself highly honored by the
selection and accepted the post.

The fourth of the physicians of Pope Leo X was Jerome Sessa, Doctor of
Philosophy and Medicine, who was afterwards the particular friend and
physician of Pope Paul IV. He is the author of a treatise on medical
matters, _De Re Medica_, and was singularly respected for his kindness
to the poor, and for the {443} self-sacrifice with which he gave
himself to the more difficult duties of his profession.

The fifth physician of Pope Leo X was Clementius Clementinus, noted in
distinction from many of his colleagues as a Doctor of Arts and
Medicine instead of the usual combination with philosophy. Van der
Linden declares that "he was second to none in the opinion of Rome and
the whole of Italy in his knowledge of medicine though he was at the
same time a very celebrated astronomer." He had been professor of
philosophy and mathematics at Padua. He is the author of a work on The
Precepts of Medicine published by Jacob Mazzocchium at Rome, 1512. He
also wrote a work on astronomy, and a monograph on fevers.

Adrian VI (1522-23), the distinguished Belgian scholar elected to the
Papacy to succeed Leo X, had the honor of having dedicated to him a
monograph, _De Pestilentia_, written by the well-known Bartholomeo
Montagnana, who is one of th