II. INTRAMUSCULAR INJECTIONS 1. MERCURY 2. SALVARSAN, NEOSALVARSAN, OTHER ARSENIC PREPARATIONS 3. SODIUM NUCLEINATE 4. ANTIMONY III. INTRAVENOUS 1. MERCURY 2. MERCURIALIZED SERUM 3. SALVARSAN, NEOSALVARSAN, ARSENIC 4. IODIDES IV. SPINAL INTRADURAL 1. SALVARSANIZED SERUM (IN VIVO—SWIFT-ELLIS) 2. SALVARSANIZED SERUM (IN VITRO—MARINESCO-OGILVIE) 3. MERCURIALIZED SERUM (BYRNES) V. CEREBRAL SUBDURAL AND INTRAVENTRICULAR 1. SALVARSANIZED SERUM (IN VIVO) 2. SALVARSANIZED SERUM (IN VITRO) 3. MERCURIALIZED SERUM CHART 26 =Physically=, the patient showed a right-sided hemiplegia with excessive right knee-jerk, but without Babinski or other abnormal reflex phenomena. The extraocular movements were somewhat restricted in range but there was neither strabismus nor nystagmus. The question arose whether the hemiplegia was of hemorrhagic or thrombotic origin. After all, at 51 years, hemiplegia is rather unlikely to be of a non-syphilitic arteriosclerotic origin; moreover, we had a clear history of syphilis. The serum W. R. proved positive as well as the spinal fluid W. R. The finding of 77 cells per cmm., excess albumin, and positive globulin test, taken in connection with the entire picture seems to warrant a diagnosis of CEREBROSPINAL SYPHILIS. If we proceed on statistical grounds, it might be regarded as more probable that the hemiplegia is THROMBOTIC in origin rather than hemorrhagic. It appears that syphilitic cerebral thrombosis rather characteristically occurs without preliminary symptoms, despite the fact that many cases do show headache, dizziness, and restlessness as prodromal symptoms. 1. What is the treatment indicated in the case of Mrs. Meyer? It would appear that little or nothing can be done for the hemiplegia unless the claims of Franz with respect to reëstablishment of a degree of function in certain hemiplegics are substantiated. However, the indication of meningitic process as shown by the spinal fluid, suggests that the case is not a purely vascular one but may be regarded as meningovascular. (Possibly, also, we should regard the left frontal depression and scar as indicative of a non-parenchymatous and non-vascular process.) Accordingly, antisyphilitic treatment should be theoretically of some value.