“Oh, come,” said Harry, “it is unphilosophical and narrow-minded to fasten on a class the faults of a few individuals, that form a very moderate portion of that class.” Bayne seemed staggered by a blow so polysyllabic; and Henry, to finish him, added, “Where there's a multitude, there's a mixture.” Now the first sentence he had culled from the Edinburgh Review, and the second he had caught from a fellow-workman's lips in a public-house; and probably this was the first time the pair of phrases had ever walked out of any man's mouth arm in arm. He went on to say, “And as for Cheetham, he is not a bad fellow, take him altogether. But you are a better for telling me the truth. Forewarned, forearmed.” He went home thoughtful, and not so triumphant and airy as yesterday; but still not dejected, for his young and manly mind summoned its energy and spirit to combat this new obstacle, and his wits went to work. Being unable to sleep for thinking of what he should do he was the first to reach the works in the morning. He lighted his furnace, and then went and unlocked the room where he worked as a handle maker, and also as a cutler. He entered briskly and opened the window. The gray light of the morning came in, and showed him something on the inside of the door that was not there when he locked it overnight. It was a very long knife, broad toward the handle, but keenly pointed, and double-edged. It was fast in the door, and impaled a letter addressed, in a vile hand-- “TO JAK THRE TRADES.” Henry took hold of the handle to draw the knife out; but the formidable weapon had been driven clean through the door with a single blow. Then Henry drew back, and, as the confusion of surprise cleared away, the whole thing began to grow on him, and reveal distinct and alarming features. The knife was not one which the town manufactured in the way of business, it was a long, glittering blade, double-edged, finely pointed, and exquisitely tempered. It was not a tool, but a weapon. Why was it there, and, above all, how did it come there? He distinctly remembered locking the door overnight. Indeed, he had found it locked, and the window-shutters bolted; yet there was this deadly weapon, and on its point a letter, the superscription of which looked hostile and sinister. He drew the note gently across the edge of the keen knife, and the paper parted like a cobweb. He took it to the window and read it. It ran thus: “This knifs wun of too made ekspres t'other is for thy hart if thou doesnt harken Trade and leve Chetm. Is thy skin thicks dore thinks thou if not turn up and back to Lundon or I cum again and rip thy ---- carkiss with feloe blade to this thou ---- cokny “SLIPER JACK.” CHAPTER IV.