[39] Pp. 161–162.
[40] Leslie’s Weekly, September 24, 1896.
[41] Harper’s Weekly, September 15, 1883
[42] Popular Science News, July, 1887.
[43] The Independent, April 19, 1888.
[44] “Earth Hunger, and Other Essays,” pp. 217–270.
[45] The Independent, June 13, 1889.
[46] Falke, “August von Sacheen.”
[47] The North American Review, Vol. CXXXII, pp. 559–566. (June, 1881.)
[48] The North American Review, vol. cxxii, pp. 47–87. (January, 1876.)