Eustachi, Or Eustachio, Bartolommeo (Lat. Eustachius), an Italian anatomist, born probably at San Severino, near Salerno, died in Rome in 1574. He was a contemporary of Vesalius, and shares with him the merit of laying the foundation of the science of human anatomy. He extended the knowledge of the internal ear by giving a correct description of the tube between the throat and the ear, which has been called after him the Eustachian tube. He was also the pioneer in the accurate study of the anatomy of the teeth. His Tabuloe Anatomicoe, the text to which seems to have been lost, were first published in 1714 by Lancisi. Eustachi, who was professor of anatomy and physician to the cardinals Bor-romeo and Rovero, seems to have been so poor that he was unable to publish his works. Lauth remarks that if he had been able to publish them, anatomy would have attained the perfection of the 18th century 200 years earlier at least. A new edition of the Tabuloe was published by Albinus with an excellent commentary (Leyden, 1743). A Dutch commentary by Bonn appeared in Amsterdam in 1798; and one in German by Kraus in the same city in 1800.