Born at Aulnay-sur-Odon, Calvados, in December, 1834. He began his medical studies at Caen, where he was Prosector of Anatomy and Interne at the Hôtel Dieu. He completed his studies in Paris, where in 1857 he gained in competition the post of Interne des Hôpitaux, becoming Prosector in four years' time. In 1863 he became Surgeon to the Bureau Central, the first step in the ladder of the surgical hierarchy. In 1866 he won for himself the position of Professeur-Agrégé of Surgery with a dissertation on the surgical affections of the nerves. In 1868 he became Directeur des Travaux Anatomiques, and began to lecture on anatomy and to give instruction in operative surgery. In 1878 he was appointed Surgeon to the Beaujon Hospital, and in 1879 was elected a Member of the Académie de Médecine, of which he was President at the time of his death. In 1886 he was transferred from the Beaujon to the surgical staff of the Hotel-Dieu, and succeeded Duplay in 1890 as Professor of Clinical Surgery at the Charite. In 1892 he was promoted to be Officier of the Legion of Honour, and eventually in 1904 became Grand Officier. On July 25th, 1900, he was elected Hon FRCS at the Royal College of Surgeons. He was President of the Académie de Médecine in 1904, until he died on October 20th, 1904. His portrait is in the Hon Fellows' Album. By his will he made large bequests to the Medical Association of the Department of the Seine and to other professional bodies, and left £20,000 to the French fund for pensions to working men. Publications: *Des Affections chirurgicales des Nerfs*, 4th, Paris, 1866. This was one of his agregation theses. *Traité de Chirurgie Clinique*, 2 vols., 8vo, illustrated, Paris, 1887-9; 4th ed, 1897. *Train d'Anatotnie topographique, avec Applications à la Chirurgie*, 8vo, illustrated, Paris, 1877; 10th ed, 1900. *Recherches cliniques et expérimentales sur les Fractures malléolaires*, 1872. *Recherches expérimentales sur le Mécanisme de la Production des Luxations coxofémorales en arrière*. This important monograph, published in 1878, embodied the results of Ollier's experimental and clinical researches. *Leçons de Clinique chirurgicale rédigées et publiées par...Paul Thiéry*, 8vo, Paris, 1895.