years. American born, of American parents. Had spasms at two years. Cerebro-spinal meningitis and infantile paralysis also at two; has had measles and whooping-cough. Supposed cause, “a fall at twenty months. CASE 298. NANCY H. 17 years old. Mentality 3. Has been here 7 years. American born; father American, mother unknown. Colored. Supposed cause, “marasmus ” which she had at the age of two months. CASE 299. HAROLD T. 18 years old. Mentality 2. Has been here Io years. American born, of American parents. Had diphtheria at the age of three, measles at four, had partial paralysis from waist down. Con-