w 



Fig. 86. {upper) The door is sealed tight, the signal given, and the two-ton steel ball 

 rises gently, clears the rail and is swung outward. Fig. 87. {lower) This is the moment of 

 greatest worry to Tee-Van and Sylvester, who are in charge of the deck machinery. A sud- 

 den swell sets the bathysphere swinging like a pendulum; then a second wave counteracts 

 the movement, and at this propitious second, it must be dropped beneath the surface. 



