Fig. 3.1 Internal arrangement of the bathysphere of 1934. From left to right-Chemical apparatus with its blower; 

 four trays and pan; oxygen tank and valve; telephone coil and battery box— the telephones are plugged into this box 

 and it is connected by the wire shown on the two hooks above the oxygen valve, with the telephone wires in the 

 communication hose; thermometer-humidity recorder, and below it the left hand sealed window; barometer; 

 switch-box at top of sphere; central observation window, immediately below switch-box; oxygen tank and valve; 

 searchlight. The communication hose is shown as it enters the bathysphere through the stuffing-box. [From Ref. (1)] 



33 



