ALLEN, Harrison, physician, born in Philadelphia, Pennsylvania, 17 April 1841. He was graduated at the medical school of the University of Pennsylvania in 1861, in 1862 became assistant surgeon in the United States army, and served with the army of the Potomac until March 1863, when he was transferred to hospital duty at Washington, where he remained until his resignation in December 1865, and attained the brevet rank of major. From 1865 to 1878 he was professor of comparative anatomy and medical zoology in the University of Pennsylvania, and since then he has filled the chair of physiology. In 1867 he was elected professor of anatomy and surgery in the Philadelphia dental College, and in 1870 surgeon to the Philadelphia hospital and secretary of its medical board. He is a member of numerous medical societies, and was a delegate from the centennial commission to the international medical congress, his contributions to the various medical journals relate chiefly to osteomyelitis, human anatomy, and morbid anatomy. He has published "Outlines of Comparative Anatomy and Medical Zoology" (Philadelphia, 1867), "Studies in the Facial Region" (1874), and "An Analysis of the Life-form in Art" (1875).