etc., which I have treated by psychotherapy, I have
succeeded in positively demonstrating that their fathers have gone
through an attack of syphilis before marriage; they have either suffered
from tabes or general paresis, or there was a definite history of lues.
I expressly add that the children who were later neurotic showed
absolutely no signs of hereditary lues, so that the abnormal sexual
constitution was to be considered as the last off-shoot of the luetic
heredity. As far as it is now from my thoughts to put down a descent
from syphilitic parents as a regular and indispensable etiological
determination of the neuropathic constitution, I nevertheless maintain
that the coincidence observed by me is not accidental and not without
significance.

The hereditary relations of the positive perverts are not so well known
because they know how to avoid inquiry. Still there is reason to believe
that the same holds true in the perversions as in the neuroses. We often
find perversions and psychoneuroses in the different sexes of the same
family, so distributed that the male members, or one of them, is a
positive pervert, while the females, following the repressive tendencies
of their sex, are negative perverts or hysterics. This is a good example
of the substantial relations between the two disturbances which I have
discovered.

*Further Elaboration.*--It cannot, however, be maintained that the
structure of the sexual life is rendered finally complete by the
addition of the diverse components of the sexual constitution. On the
contrary, qualifications continue to appear and new possibilities
result, depending upon the fate experienced by the sexual streams
originating from the individual sources. This _further elaboration_ is
evidently the final and decisive one while the constitution described as
uniform may lead to three final issues. If all the dispositions assumed
to be abnormal retain their relative proportion, and are strengthened
with maturity, the ultimate result can only be a perverse sexual life.
The analysis of such abnormally constituted dispositions has not yet
been thoroughly undertaken, but we already know cases that can be
readily explained in the light of these theories. Authors believe, for
example, that a whole series of fixation perversions must necessarily
have had as their basis a congenital weakness of the sexual impulse. The
statement seems to me untenable in this form, but it becomes ingenious
if i