(Text Page) Botanical Description (of the United States). By Thomas C. Porter, A.M., Professor of Botany in Lafayette College, Easton, Pa: Gray's Atlas Of The United States, With General Maps Of The World. Accompanied By Descriptions Geographical, Historical, Scientific and Statistical. By O.W. Gray, Civil And Topographical Engineer, No. 10 North Fifth Street, Philadelphia. Published By Stedman, Brown & Lyon, No. 10 North Fifth Street, Philadelphia. 1873. (on verso) Entered ... 1873, by O.W. Gray ... Washington