therefore had time for making an agonizing ejaculation. It has been mentioned, that the murderer of the Marrs was not for nearly a fortnight so much as suspected; meaning that, previously to the Williamson murder, no vestige of any ground for suspicion in any direction whatever had occurred either to the general public or to the police. But there were two very limited exceptions to this state of absolute ignorance. Some of the magistrates had in their possession something which, when closely examined, offered a very probable means for tracing the criminal. But as yet they had _not_ traced him. Until the Friday morning next after the destruction of the Williamsons, they had not published the important fact, that upon the ship-carpenter's mallet (with which, as regarded the stunning or disabling process, the murders had been achieved) were inscribed the letters 'J. P.' This mallet had, by a strange oversight on the part of the murderer, been left behind in Marr's shop; and it is an interesting fact, therefore, that, had the villain been intercepted by the brave pawnbroker, he would have been met virtually disarmed. This public notification was made officially on the Friday, viz., on the thirteenth day after the first murder. And it was instantly followed (as will be seen) by a most important result. Meantime, within the secrecy of one single bedroom in all London, it is a fact that Williams had been whisperingly the object of very deep suspicion from the very first--that is, within that same hour which witnessed the Marr tragedy. And singular it is, that the suspicion was due entirely to his own folly. Williams lodged, in company with other men of various nations, at a public-house. In a large dormitory there were arranged five or six beds; these were occupied by artisans, generally of respectable character. One or two Englishmen there were, one or two Scotchmen, three or four Germans, and Williams, whose birth-place was not certainly known. On the fatal Saturday night, about half-past one o'clock, when Williams returned from his dreadful labors, he found the English and Scotch party asleep, but the Germans awake: one of them was sitting up with a lighted candle in his hands, and reading aloud to the other two. Upon this, Williams said, in an angry and very peremptory tone, 'Oh, put that candle out; put it out directly; we shall all be burned in our beds.' Had the British party in the room been awake, Mr. Williams would have roused a mutinous protest against this arrogant mandate. But Germans are generally mild and facile in their tempers; so the light was complaisantly extinguished. Yet, as there were no curtains, it struck the Germans that the danger was really none at all; for bed-clothes, massed upon each other, will no more burn than the leaves of a closed book. Privately, therefore, the Germans drew an inference, that Mr. Williams must have had some urgent motive for withdrawing his own person and dress from observation. What this motive