“I do.”

“Well, I think you are mistaken.”

“What! don’t you recognise the symptoms?”

“Of an earthquake? no! I am looking out for something better.”

“What can you mean? Explain?”

“It is an eruption, Axel.”

“An eruption! Do you mean to affirm that we are running up the shaft of a volcano?”

“I believe we are,” said the indomitable Professor with an air of perfect self-possession; “and it is the best thing that could possibly happen to us under our circumstances.”

The best thing! Was my uncle stark mad? What did the man mean? and what was the use of saying facetious things at a time like this?