—Note on the New Geological Map of Europe. 6 pp.—Trans. Am. Inst. Min. Engin.
—Some Supposed Fossils from the Susquehanna River, just South of the Pennsylvania-Maryland Line. 3 pp., 1 pl.—Proc. Am. Phil. Soc'y XVIII, Sept. 18, 1879.
—Missing Ores of Iron. 12 pp., Ill.—Trans. Am. Inst. Min. Engin., Vol. VI, 1879.
—The Peach Bottom Slates of Southeastern York and Southern Lancaster Counties, Penn. 5 pp., 1. pl.—Trans. Am. Inst. Mining Engin., 1883.
—A Speculation on Protoplasm. 7 pp.—Am Nat., July, 1876.
—A Mirror for Illuminating Opaque Objects for the Projecting Microscope. 2 pp.—Am. Phil. Soc'y, Feb. 20, 1880.
—The Progress of Chemical Theory; Its Helps and Hindrances. 37 pp.—Journ. Franklin Instit., Apr., May and June, 1891.
—Mineral Formulæ. 6 pp.—Proc. Acad. Nat. Sci., Phila., July 7, 1874.
—Notes from the Literature on the Geology of Egypt, and Examination of the Syenitic Granite of the Obelisk which Lieut. Comd'r Gorringe, U. S. N., brought to New York. 27 pp., 4 pl.—Trans. Am. Inst. Mining Engin., 1883.