Although but 44 years of age, Falvey presented the appearance of a much older man. His heart was somewhat enlarged and there was a degree of peripheral arteriosclerosis. On the whole, no special attention was attracted to this case clinically and he was regarded as an example of arteriosclerotic dementia, like many another among the transfers. However, we owe to Dr. H. M. Swift the important observation of the Argyll-Robertson pupils. The case was studied long before the Wassermann method was available, and is here reported merely to call attention to the fact that the stiff pupils may have other neural origin than neurosyphilis. The autopsy material in the case was worked up by one of the authors.[11] The autopsy had been performed by Dr. A. M. Barrett, who found on section through the brain stem at the anterior border of the pons a mass springing from and continuous with the pineal gland, lying in the third ventricle and the aqueduct of Sylvius. Upon further study, this mass was found to begin posteriorly in the pineal body itself, from which the mass could hardly be told in the gross except by an injected border. This mass proved upon microscopic examination to be a psammoma, which histologically resembled a glioma rather than a sarcoma. Throughout the mass there was a variable content of fibrillary intercellular substance having the histological reactions of neuroglia fibrillæ. The histological details (mitosis, large giant cells with multiple nuclei, etc.) do not here concern us. We deal with a neoplasm springing from the pineal gland growing on the posterior half of the third ventricle, the anterior orifice of the aqueduct of Sylvius, and the space between the velum interpositum as far back as the posterior corpora quadrigemina. There is no evidence in the body of old syphilis; although it is possible that the stiff pupils were neurosyphilitic, it seems probable that they were related to the pineal tumor. At all events, there are in the literature evidences that the pineal-quadrigeminal group of tumors and other lesions may bring about pupillary disturbances. On this account, we here include the case. The tumor hardly led to an error in diagnosis since neither neurosyphilis nor brain tumor was at all expected clinically. 1. Can alcoholism produce identical results? See Case Murphy, (60), one of alcoholic pseudoparesis.