Minot speaks of a hydrocephalic infant whose head measured 27 1/2 inches in circumference; Bright describes one whose head measured 32 inches; and Klein, one 43 inches.

Figure 93 represents a child of six whose head circumference was 36 inches.

Figure 94 shows a hydrocephalic adult who was exhibited through this country.
There is a record of a curious monster born of healthy half-caste African parents.

The deformity was caused by a deficiency of osseous material of the bones of the head.

There was considerable arrest of development of the parietal, temporal, and superior maxillary bones, in consequence of which a very small amount of the cerebral substance could be protected by the membranous expansion of the cranial centers.
The inferior maxilla and the frontal bone were both perfect; the ears were well developed and the tongue strong and active; the nostrils were imperforate and there was no roof to the mouth nor floor to the nares.
The eyes were curiously free from eyelashes, eyelids, or brows.