Andrews' patient: photographs[2, plate opposite p.243] show a rounded
bodily outline, hairless face, well-developed mammæ--the female sex
characteristics in every respect which the ordinary person could detect.
Yet an operation proved that the sex glands themselves were male.

Presumably extreme cases like the above are rare. Obviously operations
cannot be performed on all those with female-type bodies who do not bear
children, to determine the primary sex, and conversely with men. This
does, however, point the obvious question: Are not some we classify as
men _more male_ or masculine than others--some we classify as women
_more feminine_ than others? Bearing in mind the fact that the genetic
basis for both sexes exists in each individual, are not some women more
masculine than others, some men more feminine than others? However much
we may object to stating it just that way, the biological fact remains
thus. The Greeks called these intermediate types _urnings_--modern
biology knows them as "intersexes."

Only within the past few years have the general phenomena of
intersexuality been cleared up to any considerable extent--naturally on
the basis of the secretory explanation of sex. This secretory or
endocrine idea has also given us an entirely new view of sex
differences. These are best discussed as functional rather than as
structural. To correlate this material, we must next give a rude sketch
of the quantitative theory of sex.

BIBLIOGRAPHY FOR CHAPTER II

1. Goldschmidt, R. Intersexuality and the Endocrine Aspect of Sex.
Endocrinology, Vol. I, p. 434, 1917.