The next day the discharge became watery, and in it were found small pieces of true brain-substance.

In five weeks the man returned to duty complaining only of giddiness and of a "stuffed-up" head.

In 1846 there is a record of a man of forty who fell from a scaffold, erected at a height of 20 feet, striking on his head.

He was at first stunned, but on admission to the hospital recovered consciousness.

A small wound was found over the right eyebrow, protruding from which was a portion of brain-substance.