According to the patient’s own history, he had had several attacks of gonorrhœa and a syphilitic infection at the age of 19; that is, some 31 years before admission to the hospital. However, the first _neurological_ symptoms of which the patient was aware came about 27 or 28 years after infection, namely, 3 or 4 years before admission, when facial paralysis developed. At that time, he had suddenly felt a peculiar sensation in the throat and became unable to swallow for a time. His voice remained hoarse and low for some time, and his face began to droop. The lancinating pains and the ataxia also dated back several years. 1. How shall we evaluate the mental symptoms? The prognosis of tabes dorsalis is relatively good so far as life is concerned, and it might even be possible for Sullivan by training to remain capable of being a waiter. The manual incoördination was not marked, and possibly the manual tremor was in part due to alcohol. Accordingly, the mental symptoms, such as emotional lability and memory defect, were in the foreground of attention. In point of fact, the laboratory examinations showed positive W. R. in the serum and the spinal fluid, which latter also contained 60 cells per cmm., positive globulin, and an excess of albumin. THE DIAGNOSIS MADE WAS THAT OF TABOPARESIS, meaning thereby a tabes associated with appropriate symptoms of a mental nature. 2. How shall the term _taboparesis_ be used? Some use the term, as we feel erroneously, for instances of general paresis which happen to show crural areflexia (absence of knee-jerks). We feel that the best usage of the term is for instances in which well-defined symptoms of tabes (as well as of paresis) are present, namely, characteristic ataxia, lightning pains, and the like. If the term is used more loosely, as above mentioned, then practically every case of general paresis might perhaps be termed _taboparesis_, since almost every case of paresis does show involvement of the cord as well as of the cerebrum. Such involvement may lead to hyperreflexia, hyporeflexia, or areflexia according to the localization of the process. In true taboparesis, in which there is a commingling of the features of tabes with those of paresis, we should find the posterior roots of the spinal cord affected. The spinal lesions of paresis itself are more apt to be intraspinal; that is, confined to the nervous system within the pial investment.