"I don't know," said Jill, trying to speak bravely.

"Where are they?" asked the man angrily.

"I don't know," said Jill again, quite truthfully.

"You don't know! You don't know!" said the man in disgust. "It is time you did know. Are they on this island?"

"Why don't you look and see?" said Jill. "I am sure you will not believe what I say—so you had better look."

The men glared at the plucky little girl and then went to hunt over the island. They found no one, of course, and returned looking worried.

They spoke to one another in a language that the girls could not understand. Then they went to the ruined buildings and looked around carefully. It did not take them long to see that the boys had pulled the old shack to pieces!

"So!" said the first man. "The boys tried to make a boat!"

Jill and Mary shook their heads. They were really feeling very much alarmed.

"It is a raft they made then?" asked the man. "What! You will not tell me, you naughty little girls! Then I shall order out my seaplanes and they will find those bad boys, and bring them back again. And you will all be made prisoners on another island till we take you far away to our country where you will stay for a long time."