Wallace bounded in just as supper was being put on the table.

“Good evening, everybody. Oh, it was fine!” he exclaimed. “Mr. Emerson took us for a long walk in the park—to a part I have never seen before.”

“That was splendid,” said his mother.

“Now, tell us all about your trip,” said his father, when Wallace had partly satisfied his hunger.

Wallace began: “We walked until we reached the wild part of the park. Soon we came to a steep hill and a great pile of high rocks covered with trees and bushes.

“‘How many of you boys have ever been in a real cave?’ Mr. Emerson asked. Only three of us had, and we were very much excited.

“‘Well,’ he said, ‘right above that big granite rock there is a natural cave. It was found only a few days ago. The opening was covered with bushes, so nobody knew it was there. It must have been the den of some wild animal years ago. The opening is so small that only one boy can go in at a time.’

“He divided us into four sections and made me the leader of section one.

“One at a time we climbed up until all five boys of my section were on top of the rock. There was the cave, a dark opening in the rocks about as big around as a barrel. Being the leader, I had to go in first.”

“Weren’t you scared?” asked Ruth.