Religion.

While in his social relations the young man is seeking points of
tangency with those in his own plane, in his religious experience he
seeks to come into relation with his God; that is, with the power that
exists in the plane above his own. In the researches of Coe and of
Starbuck, made several years ago they discovered the following truth
and demonstrated it as a general principle: _(1) A vast majority of
professing Christians acknowledged their allegiance to God during the
early part of the adolescent period; and (2) a vanishingly small
percentage of professing Christians became so after the age of
twenty-five._

CHAPTER III.

ANATOMY AND PHYSIOLOGY OF THE MALE GENITAL ORGANS.

ANATOMY AND PHYSIOLOGY OF THE MALE GENITAL ORGANS.

1. ANATOMY.

The external genitals of the human male consist of the penis and
scrotum, the latter containing the testes.

The _penis_ of the young man who has completed the stage of puberty
consists (1) of the two corpora cavernosa, as they are called, or
erectile bodies, called cavernosa because they contain numerous blood
sinuses which when filled cause the organ to erect. (2) Between and
beneath the corpora cavernosa lies the corpus spongiosum which
consists principally of the urethra. Around these three cylindrical
bodies there is a sheath of loose connective tissue, outside of which
is the skin.

About one inch of the distal end of the organ is differentiated into a
sort of head which is called the _glans_ over which, in the young
child, the skin is redoubled and called the _prepuce_ or foreskin. The
glans is covered and the prepuce is lined by mucous membrane. Over the
glans the mucous membrane is red, thin and moist and possesses
numerous nerve papillae. The prepuce, as stated above, usually covers
the glans penis in young children and may do so throughout life. It is
sometimes adherent to the glans. This is abnormal, and as soon as it
is discovered the adhesions should be broken up by a physician. The
normal prepuce of the adolescent male should be free from the glans
and should be sufficiently loose easily to retract back of the glans,
a position it is likely to take in erection. If the prepuce extends
half an inch or more beyond the glans penis as a little flap of skin,
or if it is constricted at the opening so that it is difficult to
clear the glans or to replace the prepuce when it is once back of the
glans, the condition is not normal, and sh