Psychopathia sexualis: With especial reference to contrary sexual instinct

1. Upon the basis of congenital contrary sexual instinct, with

repugnance for sexual intercourse with women, or even absolute incapability of it. But, as even Casper knew, pederasty, under such conditions, is very infrequent. The so-called urning satisfies himself with a man by means of passive or mutual onanism, or by means of coitus-like acts (_e.g._, coitus inter femora); and he resorts to pederasty only very exceptionally, as a result of intense sexual desire, or with a low or lowered moral sense, out of desire to please another.