here 15 years. Born in Switzerland, of Swiss parents. Came to this country when five years old. Supposed cause, “convulsions at the age of three months.” Had acute meningitis at 6 months, measles at the age of seven years and whooping-cough at eight. CASE 176. KURT D. 24 years old. Mentality 8. Has been here 11 years. American born, nationality of parents unknown. CASE 177. BYRON D. 25 years old. Mentality 7. Has been here 11 years. American born, of American parents. Had measles and whoop- ing-cough. Condition said to be congenital. CASE 180. THEODORA X. 36 years old. Mentality 7. Has been here 22 years. American born, of American parentage. Assigned cause,