CLEFT PALATE and HARELIP, in surgery. Cleft palate is a congenital cleavage in the roof of the mouth, and is frequently associated with hare-lip. Both conditions are due to faulty development and may be hereditary. The infant is pre vented from sucking, and an operation is necessary. The most favourable time for operating is between the age of two weeks and three months, and if the cleft is closed at this early date, not only are the nutrition and general development of the child greatly improved, but the voice is probably saved from much of the unpleasant tone associated with a defective roof to the mouth. After the cleft in the palate has been effectually dealt with, the hare-lip can be repaired with ease and success.