. Railway and other accidents with relation to injury and disease of the nervous system : a book for court use . nward into the opticrecess and infundibulum. Separating the thalami, it displacedupward the roof of the third ventricle and obliterated the pos-terior pillars of the fornix; it here lay in contact with the corpuscallosum. Extending backward and downward it destroyed thepineal gland, overrode the lamina quadrigemina, compressingunder it the aqueduct of Sylvius, separated the corpora quad-rigemina, and reached to the tip of the valve of Vieussens. Thefourth ventricle was intact, and t
. Railway and other accidents with relation to injury and disease of the nervous system : a book for court use . nward into the opticrecess and infundibulum. Separating the thalami, it displacedupward the roof of the third ventricle and obliterated the pos-terior pillars of the fornix; it here lay in contact with the corpuscallosum. Extending backward and downward it destroyed thepineal gland, overrode the lamina quadrigemina, compressingunder it the aqueduct of Sylvius, separated the corpora quad-rigemina, and reached to the tip of the valve of Vieussens. Thefourth ventricle was intact, and the aqueduct still patulous, butvery small. The lateral ventricles were found full of a thin red- 114 RAILWAY AND OTHER ACCIDENTS. dish fluid, and their surfaces were stained yellow. Projectinginto the right ventricle from the foramen of Monro was a cystformed by the velum and filled with a bloody fluid. There wereabout six ounces of fluid in the cranial cavity. On section of thetumor a dark-red surface is apparent, looking for the most part likeclotted blood. A considerable area near the superior surface is. Fig. i6.—Cerebellar lighter in color and of a spongy texture. There is the appearanceas if several hemorrhages had occurred at different times splittingup the new growth and forming clots. The structure of the tumoris that of a small round-cell sarcoma augmented by repeated hem-orrhages. Disease of the medulla is expressed by symptoms in-dicative of irritation or destruction of the cranial-nervenuclei at the floor of the fourth ventricle, and paralysis ofthe extremities on one or both sides. When death is notimmediate, the cranial-nerve symptoms are progressiveand develop slowly. Disturbance of function of the cranial nerves must bestudied with relation to their deep origin, course, and This and preceding cut from Medicine. July. 1900. INJURIES OF THE CRANIUM. 115 peripheral distribution, and at the same time with relationto the complete or partial decussation of
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