To share exps., relieve at wheel—must be able drive under grt. pressure—in return transp. doz. mi. or so under ocean bottom! You remember Regan. He's the man who fell overboard in a spacesuit and found that there really is a passage to India. It winds down from the Champion Deep in the Atlantic and comes out somewhere off Bombay. It took Regan a week to pop in one end of that underworld river and emerge at the other. He was delirious when he bobbed to the surface and was picked up by the Chinese