the kit, and the most economical of space. When in camp Rogers was promoted to Orderly Sergeant. Several years later, when the Captain died, Rogers was elected to the vacancy.
After having been mustered out of service at the end of the three months for which The Troop had been called into the field, Professor Rogers at once returned to his lectures before The Franklin Institute and to his classes at The University. Again he lectured in Washington before The Smithsonian Institution, this time on 'Glaciers.' In the meanwhile he was again on Professor Bache's staff engaged in completing the survey of the Potomac. The autumn saw him again on service in the field as a volunteer Engineer Officer on the staff of General Reynolds; and in the following summer of 1863, he was serving in the same capacity on the staff of General William F. Smith. Wherever and whenever he believed he could be of service to his country or to his fellow-men, his time, his labour, his talents were freely given.
In 1863, The National Academy of Sciences was organized, and Fairman Rogers was one of the original fifty members elected by the United States Senate.
As a member of this Academy, he was requested by the Government to correct the compasses of the iron vessels, which for this purpose and for his convenience were dispatched to the Philadelphia
