I was terribly excited. Whilst Hans was at work I was actively helping my uncle to prepare a slow match of wetted powder encased in linen.

"This will do it," I said.

"It will," replied my uncle.

By midnight our mining preparations were over; the charge was rammed into the hole, and the slow match uncoiled along the gallery showed its end outside the opening.

A spark would now develop the whole of our preparations into activity.

"To-morrow," said the Professor.

I had to be resigned and to wait six long hours.

CHAPTER XLI.

THE GREAT EXPLOSION AND THE RUSH DOWN BELOW

The next day, Thursday, August 27, is a well-remembered date in our subterranean journey. It never returns to my memory without sending through me a shudder of horror and a palpitation of the heart. From that hour we had no further occasion for the exercise of reason, or judgment, or skill, or contrivance. We were henceforth to be hurled along, the playthings of the fierce elements of the deep.