After that they spent a summer on Blueberry Island, and there were
gypsies on the island. Some strange things happened, but the Bobbsey
twins enjoyed every hour of their stay, and did not want to come home.

But they had to, of course, and still more strange adventures awaited
them. Those you may read about in the book just before this. It is
called: "The Bobbsey Twins on the Deep, Blue Sea," and in it is related
how the family went on a voyage to an island off the coast of Florida,
to rescue a poor, sick boy who had been left there by mistake.

Now they were home once more.

It was almost time for school to open for the fall term, and the twins
were playing in the barn, making the most of the last days of their
vacation, when the accident happened about the hay, as I have told you.

"Flossie! Freddie! Are you under there?" called Bert, anxiously, as he
threw aside armful after armful of the dried grass. "Are you down there
under the hay?"

He paused a moment to listen for an answer, but none came. If Flossie
and Freddie were there, either they did not hear him or they were so
smothered by the hay that they could not answer.

"Oh, I hope nothing has happened to them!" exclaimed Bert, and he began
digging away faster than before.

Certainly it was a large pile of hay to have fallen on two little
children. But then the hay was soft, and Bert, himself, had often been