“So as to make a reflector that will send back a ray of light quite exact—a perfect mirror.”

“That’s a looking-glass, arn’t it, sir?”

“Yes.”

“I wish you’d make one, sir, as would work o’ nights, and show us when Pete Warboys comes arter my pippins. That’d bang all yer tallow-scoops.”

“Impossible, David.”

“Yes, sir, s’posed so when I said it. But I say, Master Tom.”

“Yes.”

“That chap’s sure to know as your uncle’s gone to London for two or three days.”

“Yes; you can’t move here without its being known, David,” said Tom, polishing away, and making his fingers dirty.

“Then, don’t you see, sir?”