"I can see something to the northward! It's pretty far away, but I'm sure it's a vessel!"

Harry and Jim were literally wild with excitement, because of this joyful news; but Bob remained sufficiently calm to be able to calculate as to the length of time before the stranger could approach within hailing distance.

"There isn't wind enough to bring her this way very fast," he said after what seemed to be a long pause. "We've got time to start all the signals in good shape. Pick up the axes an' we'll see what kind of flares fifteen or twenty gallons of alcohol will make."

Jim and Harry obeyed this command without loss of time, and then started around the beach at full speed; but Bob and Joe followed more leisurely.

The boys might as well have husbanded their strength, as was learned on arriving at the point; for, to the great disappointment of both, the sail was so far away that it became necessary to search the horizon-line several moments before discovering the tiny white speck.

"That isn't much to feel glad about," Harry said, as if believing the sentinel had caused needless excitement.

"It's a good deal more than we've seen before, except when the schooner from Nassau put in here," Walter replied. "It didn't look half as big when I first saw it, and I watched a long time before telling you."

While Harry and Jim were gazing at that which looked more like the wing of a bird than a canvas large enough to propel a ship, Bob and Joe arrived. They did not appear to be at all disappointed; and, in fact, the old sailor stared at the tiny object as if it was even nearer than he expected, while he said to the engineer:

"I reckon we'll be able to make out what kind of a craft she is before dark. There is yet considerable of a job necessary to get the signals in workin' order, an' we'd better begin."

The entire party would be needed, and all hands started up the beach, halting at the first cask. The head of this was knocked in, a little more than half its contents poured out, and one of the signals was in readiness for the spark of light which would send the flames mounting skyward.