echo to-night. There must be something wrong," and saying this he again called out:

"Oh, great cave! great cave!"

The foolish Tortoise, thinking that if he simulated an echo the Monkey would enter the cave as usual, hereupon gave answer from his dark corner:

"Oh, great cave! great cave!"

On hearing this the Monkey chuckled to himself at the simplicity of the Tortoise, and went off to sleep in some other part of the forest.