New York,Press of J. J. Little & co.,1889 | Library of Congress

scientific article published in 1884

Cambridge: Printed for the Museum, 1889.

Boston, D. C. Heath & Co., 1890.

Philadelphia: Published by the Author, 1885-1935.

[Philadelphia: American Philosophical Society, 1894].

Washington: U.S. Geological Survey, 1903.

Washington,: Govt. print. off., 1903.

scientific article

Boston, Ginn and Heath, 1880.