Gullmannus speaks of an abortion which he attributes to the woman's constant neglect to answer the calls of nature, the rectum being at all times in a state of irritation from her negligence.

Hawley mentions abortion at the fourth or fifth month due to the absorption of spirits of turpentine.

Solingen speaks of abortion produced by sneezing.

Osiander cites an instance in which a woman suddenly arose, and in doing so jolted herself so severely that she produced abortion.

Hippocrates speaks of extreme hunger as a cause of abortion.