A robust servant Girl, about eighteen years old, was severely oppress’d
with the Night-mare, two or three nights before every eruption of the
Menses, and us’d to groan so loudly as to awake her Fellow-servant, who
always shook or turn’d her on her Side; by which means she recover’d.
She was thus afflicted periodically with it, ’till she took a bedfellow
of a different sex, and bore Children.