Kraepelin finds the apoplectiform type of brain syphilis very common. After a few premonitory symptoms such as headache, dizziness, irritability, weakness of memory, etc., a typical apoplexy takes place, leaving a hemiplegia with or without a speech defect. This sometimes occurs without any loss of consciousness. The patient presents the appearance of an ordinary hemiplegic with increased reflexes on one side and ankle clonus followed by a Babinski reflex, etc. Writing is usually affected as well as speech. There may not be another attack for some years. There is, however, a progressive mental deterioration. Occasional confusional states or excitements may be met with. In the meanwhile, numerous physical signs appear, papillary changes, disturbances of the reflexes, ptosis, tremors, hemianopsia, etc. Epileptiform attacks may occur. The blood pressure is usually quite high. There is an increase in the cells in the spinal fluid, often with a negative Wassermann, although the blood serum is positive. Death usually results from a seizure. Three-fourths of Kraepelin's cases developed before the age of forty-five, which, of course, assists materially in the diagnosis. In younger individuals usually, cerebral syphilis may manifest itself in the form of an epilepsy. Kraepelin is of the opinion that these conditions usually result from endarteritic involvements. In their development they show nothing differing in any way from an ordinary epilepsy. The attacks are usually mild at first, gradually increasing in severity, and are much aggravated by alcohol. There are, however, the usual physical signs of brain lues and later speech defects appear. There is eventually an emotional and intellectual deterioration. The changes in the spinal fluid are those described as characteristic of the other form of syphilis.