Washington DC: Government Printing Office, 1906. First edition. Rebound in Library Buckram, including original covers. Folio, pp. 62 plus 3 page publications list. Indexed, illustrated with 7 Plates and 31 Figures. Very good condition, but mild ex-library. Item #13997
Very well-preserved ex-library copy from the collection of Oliver B. Hopkins of Johns Hopkins University, a noted geology scholar.