The sutures in the =calvarium= are well outlined; diploë large in amount. The =dura= is diffusely but lightly adherent to the calvarium; it is very dense, especially over the left hemisphere. The meningeal arteries are thickened but not atheromatous. The sinuses contain a small amount of fluid blood and post mortem clot. The inner surface shows nothing abnormal. There is a great flattening of the convolutions of the left hemisphere, which is not the case on the right side. Over the convexity, the =pia= is thin and not abnormal except for some slight adhesions between the frontal lobes and the two lips of the Sylvian fissures. The pia at the base over the cisterna, pons, and medulla is thick, cloudy, and of a grayish gelatinous appearance. It is so thick that it is easily removable in a large piece. The surface of the left hemisphere is dry, and the whole brain is flabby and bulges as if from internal pressure. A section through the hemispheres at the region of the optic chiasm shows a hard, firm area in the left hemisphere deep down in the white substance. It is about 2½ cm. in diameter, with a wavy border. The central part is of a silver-gray gelatinous-like appearance, with red spots and whitish streaks radiating from the centre. In the pons on the right side, in a plane passing through the posterior corpora quadrigemina, are two pinhead size softenings among the pyramidal fibres. The ependyma of the fourth ventricle is granular. =Microscopic examination of the tumor=: The area evidently contains several central necrotic foci surrounded by zones of infiltration and proliferation, with bordering areas of nervous tissue showing secondary reactions. The necrotic area stains poorly. From the edge there are projections of reddish homogeneous bands, some intermixed with well-differentiated fibrillæ, probably glia fibrils. The bordering zone is densely infiltrated with lymphoid, plasma, and a few epithelial cells. The nerve tissue outside of this zone is spongy and infiltrated with lymphoid and plasma cells. There are a few scattered, shrunken nerve cells. In this zone and in the zone of infiltration near the necrotic area, there are scattered cells resembling giant cells. There are many obliterated vessels in the area, and other vessels show many infiltrating lymphoid and plasma cells in the walls. The examination of the specimen stained by the methods for bacilli of tuberculosis are negative. The growth is a classical gumma. =GUMMATOUS NEUROSYPHILIS (gumma of spinal meninges, “meningitis hypertrophica cervicalis of Charcot?”). Autopsy.=