time until deep enough to escape the surface motion. Waiting until she was far enough down so that her lights would not offer a mark for the guns of the warship, the electrics were switched on.
"We're safe now!" cried Tom, helping his father to his cabin. "They've got too much to attend to themselves to follow us now, even if they could. Shall we go ahead, Captain Weston?"
"I think so, yes, if I may be allowed to express my opinion," was the mild reply, in strange contrast to the strenuous work in which the captain had just been engaged.
Tom signaled to Mr. Sharp in the engine-room, and in a few seconds the Advance was speeding away from the island and the hostile vessel. Nor, deep as she was now, was there any sign of the hurricane. In the peaceful depths she was once more speeding toward the sunken treasure.
