National Geographic : 1934 Oct
THE GONDOLA, FITTED WITH THESE INSTRUMENTS AND MECHANISMS, WAS A LABORATORY OFTHE SKIES Left-hand picture: 1, 2, 3, 4, 22-flasks for obtaining samples of stratosphere air; 41-observation porthole in topofgondola (through this window thetear inthe balloon was discovered) ; 43-altimeter for outside pressure; 47-altimeter for inside pressure; 44, 6, 30-observation portholes (fitted with double pyrex glasses) ;34 statoscope (tells whether balloon is rising or falling); 40-manhole assigned to Major Kepner; 48, 49, 50, 51-cosmicray counters; 12-barometer box; 38-horizon spectrograph (sky spectrograph is behind 22); 39-most heavily shielded electroscope (shell contains 600 pounds oflead); 36,37,46-batteries; 45-photographic recording device for cosmic ray counters; 52-switchboard for cosmic ray counters; 31-special vertical observation porthole; 32-air lock fordumping ballast. (Itwill be noted that some numbers are duplicated for the same instruments in the three pictures.) Center picture: 7-balloon valve hose; 5-part ofunshielded electroscope; 10-manhole assigned to Captain Stevens; 11-camera for recording barometer readings; 13-Eyemo Motion Picture Camera; 8,9-Factographs (totake photographs of instrument dials at frequent intervals); 14-National Broadcasting Company's radio transmitter (the receiver is onshelf above, toright); 15,16,20-batteries; 18-dial showing pressure in bumper, outside; 19-dial showing pressure in gas cylinder; 17-one of three flasks containing amixture ofliquid oxygen and liquid air; 21--observation porthole. Right-hand picture: 13-tubes bringing outside air pressure to barometers; 14-valve to air-sample flask. When the gondola rose, sacks of tiny lead shot ballast were piled around the edge of the floor; the Fairchild camera for vertical pictures was in place inthe center ofthefloor.