said.

"Hark!" exclaimed the captain, as Rob prepared to give the order
to "Go ahead."

The boys listened, and heard a low, distant moaning sound,
something like the deepest rumbling notes of a church organ.

"That's the wind comin'," warned the captain. "Yer'd better be
hurryin' back."

With more hasty good-bys, the lads got under way at once. As
they emerged from the lee of the island they could see that
seaward the ocean was being rapidly lashed into choppy, white--
crested waves by the advancing storm, and that the wind was
freshening into a really stiff breeze.

"Those fellows must be wishing they took our advice now if they
are fools enough to have kept out," said Merritt, as he slowed
down the engine so as to permit the Flying Fish to ride the
rising seas more easily.

"Yes, I guess they're doing some tall thinking," agreed Tubby, as
a wave caught the little Flying Fish "quartering" on her port
bow, and sent a white smother of spray swirling back over her
occupants.

"That's the time we got it," laughed Rob, from the wheel, peering
straight ahead. Suddenly he uttered a shout and pointed seaward.