Soon the two little twins were having fun in the sand of the beach. They had not been digging very long when Freddie gave a shout.

“Oh, I hope nothing more has happened!” exclaimed Mrs. Bobbsey, starting up.

“What is it, Freddie?” called Mr. Bobbsey.

“Look at the funny nest we found!” answered the little boy. “It’s a funny nest in the sand, and it’s got a lot of chicken’s eggs in it! Come and look!”

[CHAPTER XVIII—THE “SWALLOW” IS GONE]

“What is the child saying?” asked Mrs. Bobbsey of her husband, for she did not hear all that Freddie said.

“He’s calling about having found a hen’s nest,” Mr. Bobbsey answered, “but he must be mistaken. There can’t be any chickens on this island.”

“Maybe there are,” said Mrs. Bobbsey. “Perhaps, after all, some one lives here, on the other side where we haven’t been. And they may keep chickens.”

“Oh, no,” answered her husband.

“I hardly think so,” said Cousin Jasper. “But we’ll go to look at what Freddie has found.”