S. B., aged 16 years, was admitted into the Clapton Asylum, May 7th, 1875, with the following history. She was born a healthy girl, having no mental defect. She enjoyed good health up to nine years of age, when she became the subject of chorea, supposed to have been caused by exposure to the sun. She was sent to Margate, in the hope that the change might prove beneficial to her, but the chorea continued. Four years ago, while bathing, epileptic fits came on, and soon afterwards the chorea ceased. Her intellect is said to have become weak after the fits were noticed. She has never since been free from them. She was sent to Caterham and afterwards to Hampstead Asylum, whence she was transferred to Clapton.