It was the last evening in March, and raining drearily out of doors; but in mamma's sitting-room all was bright, warm, and cosey. Jim and his big brother Rob were stretched out on the rug, feet in the air, watching the blazing fire, and talking of the tricks they meant to play next day.

"No, sir," said Rob, "you can't fool me! I know about every way there is of fooling; and I'd just like to see anybody try it on me!" And Rob rolled over on his back, and studied the ceiling with a very defiant air.

Poor little Jim looked very much troubled; for, if Rob said he could not be fooled, of course he couldn't be; and he did want to play a trick on Rob so badly! At last he sprang up, saying, "I'm going to ask mamma;" and ran out of the room. Rob waited a while; but Jim did not come back: so he yawned, stretched, and went to bed.

Next morning, bright and early, up jumped Jim, pulled on his clothes; wrong-side out and upside down (for he was not used to dressing himself), and crept softly downstairs.

An hour or two later, Rob went slowly down, rubbing his eyes. He put on his cap, and took up the pail to go for the milk; but it was very heavy. What could be the matter with it? Why, somebody had got the milk already. Just then, Jim appeared from behind the door, crying, "April Fool! April Fool! You thought I couldn't fool you; but I did."

Rob looked a little foolish, but said nothing, and went out to feed his hens. To his great surprise, the biddies were already enjoying breakfast; and again he heard little Jim behind him, shouting, "April Fool! April Fool!"

Poor Rob! He started to fill the kitchen wood-box; but Jim had filled it. Jim had filled the water-pails: in fact, he had done all of Rob's work; and at last, when he trudged in at breakfast-time, with the sugar that Rob had been told to bring from the store the first thing after breakfast, Rob said, "I give up, Jim. You have fooled me well. But such tricks as yours are first-rate, and I don't care how many of them you play."