"It did feel as though the forward end dipped down a moment ago," said Alfred.

Another wait for a half-hour, and then a most peculiar sound reached their ears. Simultaneously, the ship seemed to stop and go on. Again voices were heard, and the same reaction in the hull of the submarine was felt, accompanied by the dull noise, as before.

"They have just fired two torpedoes," said the captain.


CHAPTER IV

THE TERRORS IN THE DARK ROOM OF AN UNDERSEA BOAT

Imagine yourself locked in a compartment, barely large enough to stretch yourself out straight, in a ship under the sea, in total darkness, knowing that should any one of the hundreds of things within that ship go wrong, it would mean a plunge to the bottom of the sea, beyond the help of all human aid.

The danger to them was just as great while on the surface of the water, for the guns mounted on most vessels at this time, would make the submarine a legitimate prey. One shot would be sufficient, for ingenuity has not yet found a way to quickly stop a leak in a submarine. Such a vessel, when once struck, dare not dive, for that would quickly fill the interior of the vessel with water.