Several cases of so-called Syphilitic Insanity have now been recorded, including some good examples of the affection, in the last number of the “Journal of Mental Science,” by Drs. Newington and Batty Tuke. I now add two more which have lately been under my care in Guy's Hospital. They present no peculiar features of interest, having a general resemblance to those already reported; but I publish them in furtherance of obtaining a collection of cases in order that we may gain such a correct knowledge of their nature as numbers alone can afford.