“Unless mamma interferes, as she will be pretty sure to do,” muttered Arthur, as the door closed on Miss Day, and her retreating footsteps were heard passing down the hall.

For about ten minutes after her departure, all was quiet in the school-room, each seemingly completely absorbed in study. But at the end of that time Arthur sprang up, and, flinging his book across the room, exclaimed, “There! I know my lesson; and if I didn’t, I shouldn’t study another bit for old Day, or Night either.”

“Do be quiet, Arthur,” said his sister Louise; “I can’t study in such a racket.”

Arthur stole on tiptoe across the room, and coming up behind Elsie, tickled the back of her neck with a feather.

She started, saying in a pleading tone, “Please, Arthur, don’t.”

“It pleases me to do,” he said, repeating the experiment.

Elsie changed her position, saying in the same gentle, persuasive tone, “O Arthur! please let me alone, or I never shall be able to do this example.”

“What! all this time on one example! you ought to be ashamed. Why, I could have done it half a dozen times over.”

“I have been over and over it,” replied the little girl in a tone of despondency, “and still there are two figures that will not come right.”

“How do you know they are not right, little puss?” shaking her curls as he spoke.