1880: Gustav Jäger: "Heterosexual"
Karl-Maria Kertbeny's word heterosexual was published for the first time, in Germany, in 1880, in a book titled Discovery of the Soul, by a zoologist, Gustav Jäger.
Earlier, Kertbeny had contributed a chapter to the book arguing for the decriminalization of homosexuality, but the book's publisher decided it was too controversial and omitted it. Nevertheless, Jäger used Kertbeny's terminology elsewhere in the book.
"Karl-Maria Kertbeny," accessed April 1, 2008 from: http://en.wikipedia.org/wiki/Karl-Maria_Kertbeny. Also see Jonathan Ned Katz, The Invention of Heterosexuality (NY: Dutton, March 1995), pp. 54.
What is the full citation, in German, to Jäger's book
Where in Jäger's book is heterosexuality used, and in what context?
Is homosexuality used and, if so, where?
Are other terms invented by Kertbeny used in Jäger's book? If so, where and how.