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Updated: May 19, 2025
There is no reason for supposing that the deep frontal hollow is due to any artificial flattening, such as is practised in various modes by barbarous nations in the Old and New World. The skull is quite symmetrical, and shows no indication of counter-pressure at the occiput, whilst, according to Morton, in the Flat-heads of the Columbia, the frontal and parietal bones are always unsymmetrical.
The iron struck against the left side of the face, immediately anterior to the inferior maxillary and passed under the zygomatic arch, fracturing portions of the spheroid bone and the floor of the left orbit; it then passed through the left anterior lobe of the cerebrum, and, in the median line, made its exit at the junction of the coronal and sagittal sutures, lacerating the longitudinal sinus, fracturing the parietal and frontal bones, and breaking up considerable of the brain; the globe of the left eye protruded nearly one-half of its diameter.
In the majority of instances only fragments of the frontal and parietal bones were found, buried in pots or in fragments of pots too small to have ever contained a complete skull.
"I wonder if she works hard." "It makes precious little difference if she does," said her friend. "I asked her yesterday what were the bones in the parietal segment, and she didn't know one. Not one." The next day Miss Heydinger's place was vacant. She was ill from overstudy and her illness lasted to within three weeks of the terminal examination.
As Professor Schmerling observes, the base of the skull is destroyed, and the facial bones are entirely absent; but the roof of the cranium, consisting of the frontal, parietal, and the greater part of the occipital bones, as far as the middle of the occipital foramen, is entire or nearly so. The left temporal bone is wanting.
Our genetic hint from paresis, therefore, inclines us to the conception that this disorder of the believing process is more frontal than parietal, more of the anterior association area than of the posterior association area of the brain.
A peculiar case of this kind was that of the twin brothers Laustand who were nurses in a hospital at Bordeaux; they invariably became ill at the same time, and suffered cataract of the lens together. Automatism has been noticed as a sequel to cranial injuries, and Huxley quotes a remarkable case reported by Mesnet. The patient was a young man whose parietal bone was partially destroyed by a ball.
Neugebauer reported the history of a case of a woman who, while near her term of pregnancy, committed suicide by jumping from a window. She ruptured her uterus, and a dead child with a fracture of the parietal bone was found in the abdominal cavity. Staples speaks of a Swede of twenty-eight, of Minnesota, who was accidentally shot by a young man riding by her side in a wagon.
The owner then yielded to all our wishes, and he was destroyed with prussic acid. No morbid appearance presented itself in the brain; but, on the inner plate of the right parietal bone, near the sagittal suture, were two projections, one-sixth of an inch in length, and armed with numerous minute spicula. There was no peculiar inflammation or vascularity of any other part of the brain.
It develops from the outer germinal layer, or skin-sense layer. It comes from the outermost parietal stratum of the middle germinal layer, or the skin-fibre layer. The corium is much thicker than the epidermis. These tactile or sensory particles contain the finest sensory organs of the skin, the touch corpuscles. At an early stage the simple cellular layer of this horny plate divides into two.
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