Caterham Mental Hospital accommodates upwards of 2,000 patients, the great majority of whom are defectives. The medical staff numbers 7, and all other staff about 500. The patients are of all ages, and are described as “unimprovable adults” and “children of school age”. The type of patient has altered very little in the past five years, but a hostel has been added which accommodates 34 high-grade boys. These are selected from the other institutions of the London County Council, and, as a certain number prove unsuitable and do not wish to return to the institutions they came from, a number of higher grade patients have accumulated in the main institution. There are also, on the female side, laundry workers of high grade who have been sent for that specific work.