"Stop it!" cried Mr. Filson for the second time; and just then the safety pin dropped out!

The first lookout had almost clutched the plunging cylinder as it passed him on its backward roll.

"Ware the bomb!" shouted his mate, and both of them leaped away from the vicinity of the peril.

Nor were they to be blamed. With the pin out it was to be expected that the big bomb would immediately explode. It banged against the rail, then charged across the deck again. Every time it collided with an obstacle the spectators expected it to blow up and burst the after part of the ship asunder.

To the credit of Ensign Filson be it said that he did not fall back from his post on the quarter. Nor did he directly order, now that he thought of it, any particular man to try to hold the plunging bomb. It was work for a volunteer—a man who was willing to take his life in his hands.

There is a quality of courage that is higher than that which takes men into battle along with their fellows. The companionship of others in the charge breeds courage in many weak souls.

But to start alone on a dangerous mission, the lone man in an almost hopeless cause, calls for a steadiness of courage that few can rise to.

The four young fellows clinging together behind Mr. Filson were shot with fear, as they might very well be. At any second the bomb was likely to explode, and they were so near that they could not possibly escape the full force of the blast.

Even if the chaser herself escaped complete destruction, they could not dodge the effect of the explosion; but like the ensign they would not retreat.

These bombs are timed to explode at about an eighty-foot depth. A very few seconds would bring about the catastrophe. Every man on the deck of the S. P. 888 felt that.