“Just as I thought, it’s one of them Soopendykes!” cried Mrs. Bijur. “Good land! Look at that!”

She indicated the extension of the house, a low one-storied structure, jutting out from the rear. It was in this that the professor had set up his “laboratory,” as Mrs. Bijur called it. Her exclamation was justified.

A large hole, some three feet six inches in diameter, gaped in the once orderly tin roof. Through the aperture thus disclosed, yellow smoke was pouring in a malodorous cloud, while, on a refuse pile not far away, the eldest Soopendyke, Van Peyster, aged twelve, was picking himself up with an injured expression. His Fauntleroy suit, with clean lace cuffs and collar—fresh that morning—was in blackened shreds. His long yellow curls were singed to a dismal resemblance to their former ideal of mother’s beauty. Master Van Peyster Soopendyke was indeed a melancholy object, but he seemed unhurt, as he advanced toward them with howls of:

“I didn’t mean ter! I didn’t mean ter!”

“You young catamount!” shrilled the widow. “What in the name of time hev yer bin a-doin’ of?”

“Boo-hoo! I jes’ was foolin’ with that stuff of the professor’s an’ it went off!” howled the Soopendyke youngster, while the boys likewise exploded into shouts of laughter. In the meantime, Mr. Dacre had burst in the locked door and discovered that, beyond wrecking the laboratory, the explosion had not done much harm. He had just finished his examination when Mrs. Soopendyke, her hair falling in disorder and her ample form hastily dressed, came rushing out.

“My boy! My boy!” she cried, in agonized tones. “Van Peyster, my darling, where are you hurt; are you——”

The good lady had proceeded as far as this when her eyes fell on the smoke-blackened, ragged object, which had been blown through the roof by the force of the explosion. Luckily, his having landed on the rubbish pile had saved his limbs. But Master Soopendyke, as has been said, was an alarming object for a fond parent’s eye to light upon.

“Oh, Van Peyster!” screamed his mother. “Great heavens——”

“Aw, keep still, maw. I ain’t hurt,” announced the dutiful son.