But Joey, looking as innocent as if he were saying his prayers, shook his head negatively.

"Mistare Frank Parkare," continued the teacher, "you haf nearly ze years of a man, and cannot enchoy to see ze destruction of discipline. Who vas it that throw ze corn-grain."

And big Frank Parker unblushingly and solemnly said that he did not know.

"Efferybody tell me," exclaimed the teacher, resuming his chair with dignity, "or ze class will stay in ze room till it starve to death. How like you zat, mes garçons, eh?"

The boys did not seem particularly to enjoy the prospect, and Jack himself sobered somewhat at the thought of inflicting such a penalty upon his friends. But just there he conceived a new idea, and emerging quietly from his hiding place, he ran home, obtained a vial from his father's office, filled it with water, and hurried back. He was anxious to see as well as to hear the result of his impending operation, so he removed his board, lay along one of the beams, steadying himself by his left hand, and held the mouth of the vial over the teacher's head. Lame Joey Wilson was just translating fragmentarily, as follows:

"Avez-vous-le-chien-rouge-du-charpentier-avec—"

What the carpenter-owner of the dog really had, remained unexplained during the remainder of the session. Jack had intended to let but a single drop of water fall, and he could generally trust his hand at such work, for his father sometimes allowed him to assist in compounding prescriptions. But on this particular occasion anticipation proved too much for reality, for Jack laughed to himself so violently over the fun about to ensue that his hand shook, a stream of water poured through the hole, and trickled all over the teacher's chair. And, worse still, Jack discovered that a two-inch beam is not a safe place of repose for the human frame in moments of profound agitation, for he lost his balance, tried to save it with one elbow and one foot, which between them dislodged great masses of plaster from the laths and dropped it upon the teacher's desk.

EXPERIMENT IN GRAVITATION.

Even then the truth might not have been suspected, had not Jack, frightened at the mischief he had caused, lost all self-control and tumbled off the beam and upon the laths. Crack! Crack! went several laths, a violent commotion was heard upon the remainder, and, as the school started to its feet and the teacher dropped back in terror, a boy's foot and a section of trowser-leg appeared for an instant through a hole in the ceiling, only to be instantly withdrawn.