Curran mentions a British officer in India who, being overheated, stopped at a station bath in which the previous night he had had a plunge, and without examining, took a violent "header" into the tank, confidently expecting to strike from eight to ten feet of water.

He dashed his head against the concrete bottom 12 feet below (the water two hours previously having been withdrawn) and crushed his brain and skull into an indistinguishable mass.
There are many cases on record in which an injury, particularly a gunshot wound of the skull, though showing no external wound, has caused death by producing a fracture of the internal table of the cranium.

Pare gives details of the case of a nobleman whose head was guarded by a helmet and who was struck by a ball, leaving no external sign of injury, but it was subsequently found that there was an internal fracture of the cranium.

Tulpius and Scultetus are among the older writers reporting somewhat similar instances, and there are several analogous cases reported as having occurred during the War of the Rebellion.

Boling reports a case in which the internal table was splintered to a much greater extent than the external.
Fracture of the base of the skull is ordinarily spoken of as a fatal injury, reported instances of recovery being extremely rare, but Battle, in a paper on this subject, has collected numerous statistics of nonfatal fracture of the base of the brain, viz.:-- Male.