Seminal vesicle.
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 lord of creation and the masterpiece of Nature, in order that such a noble piece of divine workmanship should not perish, something ought to be said concerning it, it being the foundation of everything that we have hitherto been treating of, since without copulation there can be no generation. Seeing, therefore, so much depends upon it, I have thought it necessary, before concluding the first book, to give such directions to both sexes, for the performance of that act, as may appear efficacious to the end for which nature designed it, but it will be done with such caution as not to offend the chastest ear, nor to put the fair sex to the blush when they read it.