Such was my sentence! The soul of the Professor had passed into me. The genius of discovery possessed me wholly. I forgot the past, I scorned the future. I gave not a thought to the things of the surface of this globe into which I had dived; its cities and its sunny plains, Hamburg and the Königstrasse, even poor Gräuben, who must have given us up for lost, all were for the time dismissed from the pages of my memory.

“Well,” cried my uncle, “let us make a way with our pickaxes.”

“Too hard for the pickaxe.”

“Well, then, the spade.”

“That would take us too long.”

“What, then?”

“Why gunpowder, to be sure! Let us mine the obstacle and blow it up.”

“Oh, yes, it is only a bit of rock to blast!”