Constructing the Heterosexual, Homosexual, Bisexual System, by Jonathan Ned Katz

This feature explores the human production of the terms and concepts "heterosexual," "homosexual," and "bisexual," which are presented here as evidence of the construction of a historically specific social order or regime. This is the social-historical institution or system that divides people, identities, desires, acts, relationships, and groups into heterosexual, homosexual, or bisexual with profound subjective, objective, psychological, social consequences. The chronology includes scholarly works dating to the 1980s, when historians began to develop what is now called "critical heterosexual history," analysis that interrogates the historically specific discourses and institutions that comprise the hetero, homo, bi system. First published on OutHistory in 2014. Last edit: April 15, 2021.

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.[1]

====
Notes
"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.

============
Research Request:
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.