by Levi (quoted in _Archives d'Anthropologie Criminelle_,
August-September, 1912, p. 711) that the administration of
hypophysis extract to an infantile, hairless woman of 27, without
sexual feeling, produced a general tendency to growth of hair.
Such facts not only help to explain the anomalies of hair
development, but also indicate the direction in which we may find
an explanation of the anomalies of the sexual impulse.

Apart from the complicated problem presented by the hair, there are
genuine approximations to the masculine type. The muscles tend to be
everywhere firm, with a comparative absence of soft connective tissue; so
that an inverted woman may give an unfeminine impression to the sense of
touch. A certain tonicity of the muscles has indeed often been observed in
homosexual women. Hirschfeld found that two-thirds of inverted women are
more muscular than normal women, while, on the other hand, he found that
among inverted men the musculature was often weak.

Not only is the tone of the voice often different, but there is reason to
suppose that this rests on a basis, of anatomical modification. At Moll's
suggestion, Flatau examined the larynx in a large number of inverted
women, and found in several a very decidedly masculine type of larynx, or
an approach to it, especially in cases of distinctly congenital origin.
Hirschfeld has confirmed Flatau's observations on this point. It may be
added that inverted women are very often good whistlers; Hirschfeld even
knows two who are public performers in whistling. It is scarcely necessary
to remark that while the old proverb associates whistling in a woman with
crowing in a hen, whistling in a woman is no evidence of any general
physical or psychic inversion.

As regards the sexual organs it seems possible, so far as my observations
go, to speak more definitely of inverted women than of inverted men. In
all three of the cases concerning whom I have precise information, among
those whose histories are recorded in the present chapter, there is more
or less arrested development and infantilism. In one a somewhat small
vagina and prominent nymphae, with local sensitiveness, are associated with
oligotrichosis. In another the sexual parts are in some respects rather
small, while there is no trace of ovary on one side. In the third case,
together with hypertrichosis, the nates are small, the nymphae large, the
clitoris deeply hooded, the hymen t