ROGERS, Fairman, civil engineer, born in Philadelphia, Pennsylvania, 15 November, 1833. He was graduated at the University of Pennsylvania in 1853, and two years later became professor of civil engineering, which chair he held until 1870, also lecturing on mechanics in the Franklin institute from 1853 till 1865. Professor Rogers served as a volunteer in the National cavalry in 1861, and then became a volunteer officer in the United States engineers. Under the auspices of the United States coast survey in 1862 he completed the survey of Potomac river northward from Blakiston island. In 1871 he was elected a trustee of the University of Pennsylvania, and he is a member of the American society of civil engineers and of the American philosophical society. He was one of the original members of the National academy of sciences, and has served on its committees and its council. Among his more important scientific papers are "Combinations of Mechanism representing Mental Processes" (1874) ; "Notes on Grant's Difference Engine" (1874); and "Terrestrial Magnetism and the Magnetism of Iron Ships" (New York, 1883).