Then the disordered compass, thrown out of gear by the electric currents, confirmed me in a growing conviction. The mineral crust of the globe threatened to burst up, the granite foundations to come together with a crash, the fissure through which we were helplessly driven would be filled up, the void would be full of crushed fragments of rock, and we poor wretched mortals were to be buried and annihilated in this dreadful consummation.

“My uncle,” I cried, “we are lost now, utterly lost!”

“What are you in a fright about now?” was the calm rejoinder. “What is the matter with you?”

“The matter? Look at those quaking walls! look at those shivering rocks. Don’t you feel the burning heat? Don’t you see how the water boils and bubbles? Are you blind to the dense vapours and steam growing thicker and denser every minute? See this agitated compass needle. It is an earthquake that is threatening us.”

My undaunted uncle calmly shook his head.

“Do you think,” said he, “an earthquake is coming?”