John Afflacius, a monk who lived during the latter half of the eleventh century of the present era, was one of the pupils of Constantinus. His treatise “On Fevers,” according to Neuburger, contains ample evidence of the author’s ability as a clinical observer. Something still remains to be said concerning Bartholomaeus, Cophon the Younger, John Platearius the Younger and Archimathaeus. They have already been mentioned in the list of authors whose writings contributed materially to the celebrity of the Medical School of Salerno, and it is now only necessary to furnish a few particulars with regard to their lives and the nature of the work which they accomplished. Bartholomaeus wrote a treatise (entitled “_Practica_”) on the practice of medicine as taught by Hippocrates, Galen, Constantinus and the Greek physicians. Its enduring popularity is evidenced by the facts that it was translated at an early period into several languages and that portions of its text are often quoted by later authors. The book contains ample evidence that its author was a very close observer and a physician who strove to make accurate diagnoses. Cophon the Younger (about 1100 A. D.) was the author of two works: a treatise on anatomy which bore the title “_Anatomia Porci_,” and one on the practice of medicine (“_Practica_”). The ancients, it is stated, selected a pig for purposes of anatomical study “because its internal organs present a very close resemblance to those of the human being.” Both books are written in a clear and simple style. John Platearius the Younger was the author of a work on internal medicine (“_Practica Brevis_”) and also of one on the subject of urine (“_Regulae Urinarum_”). Archimathaeus wrote and published three treatises: one on “Urines,” another on practical medicine (“_Practica_”), and the third on “The Demeanor which a Physician should Observe when he Visits a Sick Person” (“_De Aventu Medici_”). The latter treatise, says Neuburger, is “a mixture of piety, artlessness, and slyness; but it furnishes a capital picture of the carefully regulated behavior of the mediaeval physician at the patient’s bedside, of the manner in which he conducted his examination of the case, and of his intercourse with the household as well as with the sick person.”