At the =autopsy=, it appeared that death was due to an early bronchopneumonia associated with acute splenitis and doubtless related to the otitis media of the left side. The body at large showed, aside from these acute lesions, a few chronic lesions, including slight scars of the left apex, and chronic adhesive pleuritis, chronic diffuse nephritis, and aortic and coronary syphilis. The aorta showed slight linear and nodular markings, with a single small dark ulcer in the upper thoracic region, but the aorta did not show the characteristic scarring which syphilitic aortas often show. The femoral marrow was of a dark red chocolate color. The thyroid appeared to be smaller than normal. A slight sacral decubitus had developed. The description of the head (E.E.S.) is given in full on account of the encephalitic lesions shown. These encephalitic lesions may be summed up as follows: Local cerebral =atrophy= and =sclerosis= of the frontal, orbital, and central regions, especially of the left operculum and left supramarginal gyrus. Extension of sclerosis to hippocampal gyri with effacement of substantia reticularis alba. Slight chronic internal =hydrocephalus=. Granular =ependymitis= (especially of floor of 4th ventricle). Compensatory edema of frontal and central pia mater. Cerebellar sclerosis (culmen monticuli, lobus culminis, lobus cacuminis). Spinal sclerosis (grossly evident in the posterior columns of the upper thoracic region and of the lumbar enlargement). The details are as follows: