Lippincott's Magazine, September, 1885

Graham's Magazine, Vol. XXXVI, No. 3, March 1850

The Kansas University science bulletin, Vol. I, No. 8, September 1902

Lippincott's Magazine of Popular Literature and Science, Volume 11, No. 27, June, 1873

Graham's Magazine, Vol. XXXVII, No. 5, November 1850

The Ohio Naturalist, vol. II, no. 2, December, 1901

Scientific American Supplement, No. 795, March 28, 1891

Graham's Magazine, Vol. XIX, No. 2, August 1841

The Kansas University Science Bulletin, Vol. I, No. 2, February, 1902

Buchanan's Journal of Man, January 1888 Volume 1, Number 12

Appletons' Popular Science Monthly, April 1899 Volume LIV, No. 6, April 1899