He cleared away various ancient prejudices and superstitions which even Krafft-Ebing sometimes incautiously repeated.

He accepted the generally received doctrine that the sexually inverted usually belong to families in which various nervous and mental disorders prevail, but he pointed out at the same time that it is not in all cases possible to prove that we are concerned with individuals possessing a hereditary neurotic taint.

He also rejected any minute classification of sexual inverts, only recognizing psycho-sexual hermaphroditism and homosexuality.

At the same time he cast doubt on the existence of acquired homosexuality, in a strict sense, except in occasional cases, and he pointed out that even when a normal heterosexual impulse appears at puberty, and a homosexual impulse later, it may still be the former that was acquired and the latter that was inborn.
In America attention had been given to the phenomena at a fairly early period.

Mention may be specially made of J.G.Kiernan and G.Frank Lydston, both of whom put forward convenient classifications of homosexual manifestations some thirty years ago.[122] More recently (1911) an American writer, under the pseudonym of Xavier Mayne, privately printed an extensive work entitled _The Intersexes: A History of Similisexualism as a Problem in Social Life_, popularly written and compiled from many sources.