Anomalies and Curiosities of Medicine

"Menstruation has always been of interest, not only to the student of medicine, but to the lay-observer as well. In olden times there were many opinions concerning its causation, all of which, until the era of physiologic investigation, were of superstitious derivation. Believing menstruation to be the natural means of exit of the feminine bodily impurities, the ancients always thought a menstruating woman was to be shunned; her very presence was deleterious to the whole animal economy, as, for instance, among the older writers we find that Pliny remarks: "On the approach of a woman in this state, must will become sour, seeds which are touched by her become sterile, grass withers away, garden plants are parched up, and the fruit will fall from the tree beneath which she sits. ""