THE Houston Air Expedition to Mount Everest succeeded in its object to fly over the actual peak on the morning of April 3. The flight, starting from Lalbalu aerodrome, occupied three hours, flew about 160 miles including two circuits of the peak, reached more than 31,000 ft. altitude, and actually cleared the top by only 100 ft. The two machines, a Houston-Westland and a Westland-Wallace (Bristol Pegasus S.III engines), flew in company and carried out a concerted programme of duties. The decision to make the flight was taken on the advice of the Indian Government Meteorological Station at Purnea, which reported winds of 57 m.p.h. velocity, without undue bumpiness, at 33,000 ft. altitude, by means of the usual balloon observations. Air-Commodore Fellowes, the leader, made a preliminary reconnaissance in his Puss Moth machine before making the final decision to start.