"Look out, Jack! They's wan acomin' for us roight now! And he's a big wan, I'm tillin' yees!" cried Jimmie, gasping for breath.

"One what?" demanded Jack, failing to see any dreadful dragon in sight, either on the land or the near-by water of the black lagoon.

"An alligator, it is, and sure the granddaddy of the tribe. I jist had a squint of the baste sneakin' along through the wather. He manes till surprise us, and it's a foine supper he'll be afther havin' I'm thinkin'," Jimmie went on, hurriedly.

"Where was this?" Jack asked, wondering whether the Irish boy could be joking, or if he had really seen something to excite him.

"Look beyant the stump on the idge of the wather, over yander. There, did ye be savin' that now? Don't till me I'm blind agin, Jack. It's movin' this way; sure it do be comin' right along. Och I wirra, listen till that, would yees?"

No wonder Jimmie fell back in dismay, for a most outrageous noise suddenly broke forth, such as certainly could never have been heard in that swamp before. But Jack immediately recognized it as the attempt of Nick to blow the old tin horn that was carried aboard the Wireless.

He shouted at the top of his sturdy voice in reply, and saw the shadowy moving object head straight for the fire.

"Here's a couple of poor chaps lost in the wilderness," laughed Jack as the other boat came closer.

"Oh! we've only come to find you," retorted Herb.

"Have you finished supper, fellows?" bellowed the fat boy.