Airmen live six days in sealed tank. 'Altitude' pressure of 12,000 ft. After living for six days in a sealed bell, to Belgian airmen, Lieutenant Jan A N Stijns and Dr Abrahams were released from the ordeal of their altitude pressure experiment in Brussels. They had intended remaining in the cell longer, living under a pressure equivalent to an attitude of 12,000 foot, but Colonel Sillevaerts, who was in charge of the experiment, decided that it was becoming dangerous. Dr Abrahams had earlier fallen days to the floor of the cell, but he recovered as the 'altitude' pressure was gradually lowered. Elaborate instruments have recorded the reactions of two men in the cell, and each day they twice draw blood from each other. The time I spent in the tank would have enabled them to circle the globe in a fast aeroplane. Two men are accepting the invitations from the RAF to visit the British pressure tank. Photo shows, Lt Dr Jan Stijns and Dr Abrahams in the pressure cell after the experiment had ended. 1 January 1938