increased vitality to the spermatozoa, and he points out that great
fertility and high development of the accessory sexual glands go together.

Steinach found that, when sexually mature white rats were castrated,
though at first they remained as potent as ever, their potency gradually
declined; sexual excitement, however, and sexual inclination always
persisted. He then proceeded to castrate rats before puberty and
discovered the highly significant fact that in these also a quite
considerable degree of sexual inclination appeared. They followed,
sniffed, and licked the females like ordinary males; and that this was not
a mere indication of curiosity was shown by the fact that they made
attempts at coitus which only differed from those of normal males by the
failure of erection and ejaculation, though, occasionally, there was
imperfect erection. This lasted for a year, and then their sexual
inclinations began to decline, and they showed signs of premature age.
These manifestations of sexual sense Steinach compares to those noted in
the human species during childhood.[6]

The genesic tendencies are thus, to a certain degree, independent of the
generative glands, although the development of these glands serves to
increase the genesic ability and to furnish the impulsion necessary to
assure procreation, as well as to insure the development of the secondary
sexual characters, probably by the influence of secretions elaborated and
thrown into the system from the primary sexual glands.[7]

Halban ("Die Entstehung der Geschlechtscharaktere," _Archiv für
Gynäkologie_, 1903, pp. 205-308) argues that the primary sex
glands do not necessarily produce the secondary sex characters,
nor inhibit the development of those characteristic of the
opposite sex. It is indeed the rule, but it is not the inevitable