“Well, would you like to know what occasioned that water-spout? It was this,” said the engineer, holding up the broken tube.

“That?” returned Pencroft.

“Yes! This cylinder is all that remains of a torpedo!”

“A torpedo!” exclaimed the engineer’s companions.

“And who put the torpedo there?” demanded Pencroft, who did not like to yield.

“All that I can tell you is, that it was not I,” answered Cyrus Harding; “but it was there, and you have been able to judge of its incomparable power!”


Chapter Five.

The Engineer’s Declaration—Pencroft’s grand Hypothesis—An aerial Battery—The four Cannons—The surviving Convicts—Ayrton’s Hesitation—Cyrus Harding’s generous Sentiments—Pencroft’s Regret.