Sibois describes the case of a woman weighing 190 pounds, who fell on her head from the top of a wall from 10 to 12 feet high.

For several hours she exhibited symptoms of fracture of the base of the skull, and the case was so diagnosed; fourteen hours after the accident she was perfectly conscious and suffered terrible pain about the head, neck, and shoulders.

Two days later an ovum of about twenty days was expelled, and seven months after she was delivered of a healthy boy weighing 10 1/2 pounds.

She had therefore lost after the accident one-half of a double conception.
Verrier has collected the results of traumatism during pregnancy, and summarizes 61 cases.

Prowzowsky cites the instance of a patient in the eighth month of her first pregnancy who was wounded by many pieces of lead pipe fired from a gun but a few feet distant.