"You folks 've got a camp o' some sort, hain't ye?" he asked; and when Van Dyck gave the expected affirmative: "I guess maybe he's spyin' 'round to find that camp. He cal'lates that'll be your weak spot, if you've got one."
That was enough to set us swiftly in motion, of course, and by hastening we kept abreast of the launch all the way along the south side of the island, though with no little difficulty, since, under the fair certainty that the boat's crew had firearms, we dared not show ourselves on the beach. At the western end of the island Grey cut across to carry word to the women, while the rest of us fought with the jungle and so kept the launch in sight all the way around the point.
Doubling the western reef ledge, the reconnoitering boat party proceeded to pass the northern shore of the island in review; and again we kept the pace, watching each inlet through the reef narrowly as the launch approached it, and hoping, rather than fearing, that the mutineers would turn in and attempt a landing and so bring matters to a crisis. It was grueling work keeping abreast of the motor-driven tender, and by the time we had made the complete circuit of the island, we were wringing wet with perspiration, and spent with running.
It was not until after a second circuit of the island was begun, with the launch still dribbling along outside of the reef, that we came to the full knowledge of what the mutineer chief was doing. He assumed that we would be following him and keeping him in sight, and he meant to run us to death; in other words, to keep us running until we could run no more. He doubtless knew, or guessed, that our camp was at the opposite end of the island from the treasure plantation, and that we couldn't guard both at the same time.
The second lap of the Marathon was a sheer fight for life, or, rather, for the breath to sustain life. If we could have kept to the beach without drawing the fire of the launch it would not have been so bad, but a single attempt to do this brought a flash and crack from the sea, and we had to dive to cover again. By the time we reached the camp end of the island this second time, Grey was reeling and tripping like a drunken man, and Van Dyck ordered him out of the running ranks.
"Stay by the women!" was the gasped-out command, and thereupon we lost Grey.
The completion of the second lap practically finished the five of us who were still in the race. When we came in sight of the Andromeda we were staggering and stumbling and caroming helplessly against the trees and other obstacles. Unless we should be given a breathing space we all knew that the game was up, so far as we were concerned; but happily the breath-catching interval was given us. Reaching the inlet opposite the yacht, the mutineers steered the motor-driven tender boldly through it and headed for the island beach. The chief was evidently taking it for granted that he had worn us out and left us behind, and was making a quick dash to gain possession of the island.
Van Dyck kept his head, in spite of the maddening fatigue that was fairly killing every man of us.
"Down!" he panted hoarsely. "Get ready and hold your fire until you can see their faces—then let 'em have it!"
At the most, we wouldn't have had to wait more than a minute or so; but Billy Grisdale was too young and too excited to wait. While the launch was still so far out as to make a shot a mere guess hazard in the starlight, Billy pulled the trigger of the pistol which had fallen to him in the distribution of the captured weapons, and the mischief was done. Of course, we all banged away at the crack of Billy's pistol, but there was every reason to believe that the volley went wide of the mark. In a twinkling the tender's motor was reversed, and there was a wild scramble aboard of her to get the emergency oars out to help her around. In the thick of it Van Dyck took a long-distance chance with the old-model rifle. There was a shrill scream and a flash of blue-and-green electric fire from the boat's motor to follow the shot, and the power went off. Goff's chuckle was like the creaking of a rusty door-hinge.