Fabricius, Or Fabrizio, Girolamo, surnamed from his birthplace ab Aquapendente, an Italian anatomist and surgeon, born at Ac-quapendente, in the Papal States, in 1537, died in Padua, May 21, 16191 A pupil of Fallopius, he succeeded him as professor of anatomy and surgery at the university of Padua, which position he held for 50 years. Fabricius was the first to demonstrate in 1574 the presence of valvular folds in all the veins of the extremities. William Harvey, who was his pupil, acknowledged himself indebted to his teachings for the discovery of the circulation of the blood. His writings comprise dissertations on the formation of the foetus, the structure of the oesophagus, stomach, and body, and the peculiarities of the eye, ear, and larynx; treatises on the egg and on veins, etc. Great honors were bestowed on him by the Venetian government, and a large anatomical theatre was constructed for his accommodation. The first edition of his surgical works appeared at Padua in 1617. An edition of his anatomical and physiological works was published by Bohn in Leipsic in 1687, followed in 1737 by the more complete one of Albinus of Leyden.