Based on Ulrich's work in the 1870s, which were the foundation of Western notions of LGBT people for the next several decades, clinical beliefs around the time of the 1890s "conflat[ed] sex, sexual orientation, and gender expression," thinking of (to use modern words for them) gay, lesbian, transgender, and gender non-conforming people as all having some kind of intersex condition. Such people were said to have "sexual inversion," and were called "inverts."[1]. Another name used for the same category through the 1890s and 1910s was "the intermediate sex," or the "intermediates," which was not physically intersex, and was understood to be often (though not always) gender nonconforming.[2]