A. M. Mauriceau, The married woman's private medical companion
“ PREGNANCY. CONCEPTION. In order to procreate the human species, there is a periodical discharge of blood from the vagina of every female, termed the catamenia, or menses. The secretion of this fluid commences at that period of life termed puberty, which occurs at different ages, according to the climate. In some latitudes it commences as early as eight or ten, and in others not until fifteen. As soon as conception or pregnancy commences, this discharge ceases, and goes to support the fœtus, or the child. ”
