Cyril the squirrel was so forgetful. He was always finding wonderful hiding places for his nuts， and then forgetting where he put them.
“Perhaps we could help？” said a little voice in his ear. “We glow-worms might be very useful. We could say and shine beside your hiding places.”
“Thank you very much，” said Cyril. “That's a splendid idea！”
So the glow-worms lit their lamps， and marked his hiding places， and Cyril never lost his nuts again.
But he was a very polite little squirrel， and he wanted to do something to help his kind friends in return.
“My mother always says that one good turn deserves another，” he said， “so isn't there something I could do for you？”
The glow-worms thought for a minute， and then one of them said： “You've got a lovely bushy tail， Cyril. Could you sweep the ground for us？ It's rather hard to get along， when it's so bumpy.”
“Of course I could，” said Cyril.
When he woke up， he remembered that the glow-worms wanted him to do something for them - but he was so forgetful， he simply couldn't remember that it was.
He thought and thought.
“I know-I'm sure they asked me to scratch up the earth for them.”
And he scratched away with his front paws until he had made the ground twice as bumpy as it was before.
“Oh dear！” said the glow-worms when they saw it. “That's not at all what we wanted. You ARE forgetful， Cyril！”
But they were very good friends to Cyril， because they went on marking his hiding places， even though he had forgotten what he had promised to do for them！