ked Jan, remembering the boy, once lame but now
cured, who had played with them and told them about Princess Blue Eyes.

"Yes, mother asked him to come and spend a week, and he said he would.
We'll have some fun in the cave."

"What do you suppose the big hole can be?" asked Mrs. Martin, when
Grandpa Martin and the children reached camp after their visit to the
strange place.

"I don't know," he answered. "It doesn't seem to have been dug with
picks and shovels. It's just a natural cave I guess, and some fishermen
may have eaten their lunch there one day when it rained. But there is no
one in it now."

Ted and Jan talked much about the cave the rest of that day. They went
for a ride in the wagon drawn by Nicknack, taking Trouble with them. On
their way back Jan said:

"Oh, I wish I had a swing."

"It would be fun," agreed Ted. "Maybe I can make one."

"You'll have to get a rope," said his sister. "Grandpa is going to row
over in the boat to-morrow. Ask him to bring us one."

"No, he don't need to bring us a rope," went on her brother.

"Why not?"

"'Cause I can get a rope in the woods."

"A rope in the woods? Oh, Teddy Martin, you can not! Ropes don't grow on
trees."

"The kind I mean does," answered Ted with a laugh. "Wait and I'll show
you."

When Nicknack had been put in the new stable which Grandpa Martin had
built for him, Teddy, followed by Jan and Trouble, walked a little way
into the woods. Ted carried with him a piece of old carpet.

"What's that for?" his sister asked.

"For a swing board," he answered.

"But where's the swing rope?"

"Here!" cried Ted suddenly. He pointed to a long wild grapevine, which
hung dangling between two trees, around which it was twined. The vine
was a very long one, and as thick around as the piece Teddy had used to
pull himself out of the hole near the cave. It did seem like a regular
swing.

"Well--maybe," murmured Jan.

"Now we can have some fun!" cried Ted. He folded the piece of carpet and
laid it over the grapevine. Then he sat down, gave a push on the ground
with his feet, and away he swung as nicely as though he was in a regular
swing, made with a rope from the store.

"Oh, how nice!" cried Janet. "Let me try it, Teddy."

"Wait till I see if it's strong enough."

He swung back and forward several more times and then let his sister try
it. She, too, swayed to and fro in the grapevine swing, which was in a
shady place in the woods. Then Trouble, w