Glandorp, from whom, possibly, Gross derived his information, relates this memorable case as being under the direction of Florianus Matthaesius of Bradenburg.

The patient, a native of Prague, had swallowed a knife eight or nine inches long, which lay pointing at the superior portion of the stomach.

After it had been lodged in this position for seven weeks and two days gastrotomy was performed, and the knife extracted; the patient recovered.

In 1613 Crollius reports the case of a Bohemian peasant who had concealed a knife in his mouth, thinking no one would suspect he possessed the weapon; while he was excited it slipped into the stomach, from whence it subsequently penetrated through to the skin; the man recovered.

There is another old case of a man at Prague who swallowed a knife which some few weeks afterward made its exit from an abdominal abscess.