In justice to the theory I am criticising, it ought to be remarked that Krafft-Ebing does not contend that wherever hereditary taint and onanism concur, the result will be sexual inversion; but rather that wherever we have diagnosed an acquired form of sexual inversion, we shall discover hereditary taint and onanism. Considering the frequency of both hereditary taint and onanism in our civilisation, this is not risking much. Those factors are discoverable in a large percentage of male persons. What seems unwarranted by facts is the suggestion that inherited neuropathy is an indispensable condition and the fundamental cause of homosexual instincts. The evidence of ancient Greece, schools, prisons, and sotadic races, compels us to believe that normally healthy people are often born with these instincts or else acquire them by the way of custom. Again, his insinuation that onanism, regarded as the main exciting cause, is more frequent among young people of abnormal inclinations than among their normal brethren, will not bear the test of common observation and of facts communicated in the autobiographies of professed onanists and confessed Urnings.
The problem is too delicate, too complicated, also too natural and simple, to be solved by hereditary disease and self-abuse. When we shift the ground of argument from acquired to inborn sexual inversion, its puzzling character will become still more apparent. We shall hardly be able to resist the conclusion that theories of disease are incompetent to explain the phenomenon in modern Europe. Medical writers abandon the phenomenon in savage races, in classical antiquity, and in the sotadic zone. They strive to isolate it as an abnormal and specifically morbid exception in our civilisation. But facts tend to show that it is a recurring impulse of humanity, natural to some people, adopted by others, and in the majority of cases compatible with an otherwise normal and healthy temperament.
Krafft-Ebing calls attention to the phenomenon of permanent _effeminatio_, in males unsexed by constant riding and the exhaustion of their virility by friction of the genitals--a phenomenon observed by Herodotus among Scythians, and prevalent among some nomadic races of the Caucasus at the present day.[27] He claims this in support of his theory of masturbation; and within due limits, he has the right to do so. The destruction of the male apparatus for reproduction, whether it be by castration after puberty, or by an accident to the parts, or by a lesion of the spine, or by excessive equitation, as appears proved from the history of nomad tribes, causes men to approximate physically to the female type, and to affect feminine occupations and habits. In proportion as the masculine functions are interfered with, masculine characteristics tend to disappear; and it is curious to notice that the same result is reached upon so many divers ways.