Washington DC: Government Printing Office, 1904. First edition. Paperback. 103pp. Octavo [23 cm] Gray and black printed wraps. Very good. The edges of the covers are subtly darkened. There is a former owner's blind stamp on the front wrap. The bottom right corner of the front wrap is creased, and has a small loss and a small closed tear. There is a half inch loss from the paper at the head of the spine. The pages are mildly browned. Item #26369
George Otis Smith was the director of the Geological Survey from 1907 to 1930.