When he was seven or eight years old, his uncle’s wife came one day to the house on horseback.  She was a fat, clumsy woman, and got on and off her horse with difficulty.  Isaac knew that all the family were absent; but when he saw her come ambling along the road, he took a freak not to tell her of it.  He let down the bars for her; she rode up to the horse-block with which every farm-house was then furnished, rolled off her horse, and went into the house.  She then discovered, for the first time, that there was no one at home.  After resting awhile, she mounted to depart.  But Isaac, as full of mischief as Puck, put the bars up, so that she could not ride out.  In vain she coaxed, scolded, and threatened.  Finding it was all to no purpose, she rode up to the block and rolled off from her horse again.—­Isaac, having the fear of her whip before his eyes, ran and hid himself.  She let down the bars for herself, but before she could remount, the mischievous urchin had put the bars up again and run away.—­This was repeated several times; and the exasperated visitor could never succeed in catching her tormentor.  His parents came home in the midst of the frolic, and he had a sound whipping.  He had calculated upon this result all the time, and the uneasy feeling had done much to mar his sport; but on the whole, he concluded such rare fun was well worth a flogging.

The boys at school were apt to neglect their lessons while they were munching apples.  In order to break up this disorderly habit, the master made it a rule to take away every apple found upon them.—­He placed such forfeited articles upon his desk, with the agreement that any boy might have them, who could succeed in abstracting them without being observed by him.  One day, when a large rosy-cheeked apple stood temptingly on the desk, Isaac stepped up to have his pen mended.  He stood very demurely at first, but soon began to gaze earnestly out of the window, behind the desk.  The master inquired what he was looking at.  He replied, “I am watching a flock of ducks trying to swim on the ice.  How queerly they waddle and slide about!” “Ducks swim on ice!” exclaimed the schoolmaster; and he turned to observe such an unusual spectacle.  It was only for an instant; but the apple meanwhile was transferred to the pocket of his cunning pupil.  He smiled as he gave him his pen, and said, “Ah, you rogue, you are always full of mischief!”

The teacher was accustomed to cheer the monotony of his labors by a race with the boys during play hours.  There was a fine sloping lawn in front of the school-house, terminating in a brook fringed with willows.  The declivity gave an impetus to the runners, and as they came among the trees, their heads swiftly parted the long branches.  Isaac tied a brick-bat to one of the pendant boughs, and then invited the master to run with him.  He accepted the invitation, and got the start in the race.  As he darted through the trees, the brick merely grazed his hair.  If it had hit him, it might have cost him his life; though his mischievous pupil had not reflected upon the possibility of such a result.