"No! no! That is my part of the work!" exclaimed Joe, nor would he hear of anything else.

Noon came and went. Their progress was altogether satisfactory. All of them admitted that outside of that one puzzling breakdown, the motor was working like a charm. It was indeed a pleasure to lie around and see the green waves flashing past, with the picturesque shore only a mile or so away.

Finally Frank announced that he had discovered the island for which he was aiming. They had made a splendid day's showing, and logged more than thirty miles, against a head wind and sea.

Frank tried to follow the chart, but he knew he would have more or less difficulty, for back of the key it was exceedingly shallow, and the channel narrow.

Speed was reduced as they started to enter the open bayou. Jerry, up in the bow, was using the pole as a sounding line, and calling out:

"Two feet! One and three-quarters! One and a half! Hey! Hold up, there! We're on an oyster bar, for sure!" And the grating noise that immediately followed told that they had lost the narrow channel again.

CHAPTER XVIII

TROUBLE

"Oysters! Yum! yum! Who said oysters?" cried Bluff, crawling forward to look.

"Just jump overboard, and you'll get your fill—millions of 'em around!" declared Jerry, prodding with his pole in an effort to release the bow of the boat, but in vain.