the size of a walnut, and joined to the neck of the bladder. Medical
writers do not agree about the use of them, but most are of the opinion
that they produce an oily and sloppy discharge to besmear the urethra so
as to defend it against the pungency of the seed and urine. But the
vessels which convey the blood to the testes, from which the seed is
made, are the _arteriae spermaticae_ and there are two of them also.
There are likewise two veins, which carry off the remaining blood, and
which are called _venae spermaticae_.



FOOTNOTES:

[4] Seminal vesicle.

[5] Urinary vesicle.

* * * * *




CHAPTER XVII

_A word of Advice to both Sexes, consisting of several Directions
with regard to Copulation._


As Nature has a mutual desire for copulation in every creature, for the
increase and propagation of its kind, and more especially in man, the