the sexual apparatus but form the entrance to the digestive tract. This
therefore supplies the factors which allow us to bring the perversions
into relation with the normal sexual life, and which are available also
for their classification. The perversions are either (_a_) anatomical
_transgressions_ of the bodily regions destined for sexual union, or (_b_)
a _lingering_ at the intermediary relations to the sexual object which
should normally be rapidly passed on the way to the definite sexual aim.


(_a_) _Anatomical Transgression_

*Overestimation of the Sexual Object.*--The psychic estimation in which
the sexual object as a goal of the sexual impulse shares is only in the
rarest cases limited to the genitals; generally it embraces the whole
body and tends to include all sensations emanating from the sexual
object. The same overestimation spreads over the psychic sphere and
manifests itself as a logical blinding (diminished judgment) in the face
of the psychic attainments and perfections of the sexual object, as well
as a blind obedience to the judgments issuing from the latter. The full
faith of love thus becomes an important, if not the primordial source of
authority.[14]

It is this sexual overvaluation, which so ill agrees with the
restriction of the sexual aim to the union of the genitals only, that
assists other parts of the body to participate as sexual aims.[15] In
the development of this most manifold anatomical overestimation there is
an unmistakable desire towards variation, a thing denominated by Hoche
as "excitement-hunger" (Reiz-hunger).[16]

*Sexual Utilization of the Mucous Membrane of the Lips and Mouth.*--The