etion on the part of the prostate gland and of Cowper's glands.
The secretion from Cowper's glands will make its way along the urethra
and appear at the opening of that duct, probably soiling the linen of
the subject. The accumulated semen from the other glands will tend
rather to aggravate than allay the sexual desires. Such a condition of
the sexual apparatus is likely to cause a nocturnal emission,
relieving this tension and emptying the gorged gland ducts. If the
nocturnal emission does not occur, the sexual desires are certain to
return to occupy the waking hours more or less completely. If the
nocturnal emission does occur, it will carry away not alone the
vesicular secretion, but also more or less of the nascent spermatozoa
and other constituents of the vital fluid. Seasons of intense and
prolonged sexual excitement are in a high degree inimical to
continence, and even though the subject does not fully submit to his
inclination, his nocturnal emissions, which are likely to come
frequently, carry away the product of the testicular secretion,
thereby depleting to a certain extent, his virility. It is hardly
necessary to urge the importance of resisting these onslaughts of
sexual passion in their very incipiency.

14. _How may the habit of masturbation best be brought under
control?_

The first thing to accomplish is the purification of the thoughts. The
most effective way to purify the thoughts is to divert them to a pure
and strictly non-sexual subject--e.g., _pure mathematics_. The young
man who is trying to break this habit will do well to follow very
closely the rather strenuous regime outlined under hygiene in the body
of the book. If his condition is complicated because of the presence
of a very long loose foreskin, he will be wise to have this removed by
the simple operation of _circumcision_. If he should awake in the
night and feel the temptation to resort to his old habit, he should
resist the temptation in its first stage and instantly put his mind on
some subject quite foreign to his sexual apparatus. If he does not
succeed by force of will in diverting his mind from himself, the best
thing to do is to arise, dress and walk. If walking will not do it let
him run, and keep moving in the open air, under God's blue sky until
he is so tired he can hardly put one foot before the other. Then if he
will retire to his room, he will probably have no further difficulty
at that time.

15. _What influence has d