Fig. 123. Internal y\rrangcment of the Bathysphere of 1934. From left to right: 

 Chemical apparatus with its blower, four trays and pan; oxygen tank and valve; tele- 

 phone coil and battery box — the telephones are plugged into this box and it is con- 

 nected 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 com- 

 munication hose is shown as it enters the bathysphere through the stuffing-box. 



