“Come on. Hurry up,” urged Ned, as Herc came out of a store where he had purchased a long coil of rope. The rope was to be used to restrain the pernicious activities of Blue Lightning, for the boys were rather afraid that he might get them into trouble if they did not confine him in some way.

“Hurry up where?”

“I’ve got a plan in my head.”

“What is it?”

“There’s no sense in our hanging about this hot town which, so far as I can see, is very much like any other town.”

“I agree with you, Ned. What’s your idea?”

“We ought to take a look at that volcano while we are here. They say the crater is wonderful. The Hawaiian word for it is ‘Sea of Fire.’”

“Humph! What guarantee have we that the thing won’t blow up while we’re there?”

“That’s very unlikely to happen. We won’t be taking any more of a chance than the people who go to see Mount Vesuvius all the time.”

“How do we get up there?”