Vixen held out all day about going down again, but several drinks of liquor at last made him bolder, and he agreed to try once more, providing Bart would go with him, and providing the bell was stored with explosives with which to fight off the demons if they showed themselves again.

The day proved cloudy, and it looked as if a storm were brewing.

"But I don't reckon we'll get it right away," said Captain Broadbeam. "And if you want to get ahead of the Raven's crowd you had better go down. I see they are getting ready to put their bell over again."

At half-past nine the Swallow's diving bell was hoisted into the Pacific once more, and Dave and his father entered it.

"We may never see you again, captain," said the young diver. "If we don't, good-by!"

A minute later the diving bell disappeared beneath the surface of the mighty Pacific.

CHAPTER XXX
IN A DIVING BELL

Down and down went the bell.

The spot chosen was about five hundred feet to the northward of where the bell had gone down before—directly over the valley the divers had discovered.