Preparing for Professor Piccard ' s ascent into the stratospherer at Zurich . Professor Piccard ' s attempt on the ascent into the stratosphere has been delayed for several days while repairs are being carried out to a leaking pipe . The sphere is kept in a tiny enclosure within a hangar and is heavily guarded day and night . Professor Dr E Tilgenkamp , secretary to Professor Piccard explaining to journalists and visitorsand visitors some of the apparatus on the Dubendorf air field near Zurich where the flight will start . 10 August 1932