But we must return to Galen and his works, which comprise the most voluminous body of writings left by any of the ancients. The great edition is that in twenty-two volumes by Kuhn (1821-1833). The most useful editions are the "Juntines" of Venice, which were issued in thirteen editions. In the fourth and subsequent editions a very useful index by Brassavola is included. A critical study of the writings is at present being made by German scholars for the Prussian Academy, which will issue a definitive edition of his works. Galen had an eclectic mind and could not identify himself with any of the prevailing schools, but regarded himself as a disciple of Hippocrates. For our purpose, both his philosophy and his practice are of minor interest in comparison with his great labors in anatomy and physiology. In anatomy, he was a pupil of the Alexandrians to whom he constantly refers. Times must have changed since the days of Herophilus, as Galen does not seem ever to have had an opportunity of dissecting the human body, and he laments the prejudice which prevents it. In the study of osteology, he urges the student to be on the lookout for an occasional human bone exposed in a graveyard, and on one occasion he tells of finding the carcass of a robber with the bones picked bare by birds and beasts. Failing this source, he advises the student to go to Alexandria, where there were still two skeletons. He himself dissected chiefly apes and pigs. His osteology was admirable, and his little tractate "De Ossibus" could, with very few changes, be used today by a hygiene class as a manual. His description of the muscles and of the organs is very full, covering, of course, many sins of omission and of commission, but it was the culmination of the study of the subject by Greek physicians.