led me to take down the top one—labelled "Series B 5"—and raise the lid. But if those dreadful dolls' heads had struck me as uncanny when poor Challoner showed them to me, they now seemed positively appalling. Small as they were—and they were not as large as a woman's fist—they looked so life-like—or rather, so death-like—that they suggested nothing so much as actual human heads seen through the wrong end of a telescope. There were five in this box, each in a separate compartment lined with black velvet and distinguished by a black label with white lettering; excepting the central one, which rested on scarlet velvet and had a red label inscribed in gold "13th May, 1909."

I gazed at this tiny head in its scarlet setting with shuddering fascination. It had a hideous little face; a broad, brutal face of the Tartar type; and the mop of gray-brown hair, so unhuman in color, and the bristling mustache that stood up like a cat's whiskers, gave it an aspect half animal, half devilish. I clapped the lid on the box, thrust it back on the shelf, and, plucking down the first volume of the "Archives," hurried out of the museum.

That night, when I had rounded up the day's work with a good dinner, I retired to my study, and, drawing an armchair up to the fire, opened the volume. It was a strange document. At first I was unable to perceive the relevancy of the matter to the title, for it seemed to be a journal of Challoner's private life; but later I began to see the connection, to realize, as Challoner had said, that the collection was nothing more than a visible commentary on and illustration of his daily activities.

The volume opened with an account of the murder of his wife and the circumstances leading up to it, written with a dry circumstantiality that was to me infinitely pathetic. It was the forced impassiveness of a strong man whose heart is breaking. There were no comments, no exclamations; merely a formal recital of facts, exhaustive, literal and precise. I need not quote it, as it only repeated the story he had told me, but I will commence my extract at the point where he broke off. The style, as will be seen, is that of a continuous narrative, apparently compiled from a diary; and, as it proceeds, marking the lapse of time, the original dryness of manner gives place to one more animated, more in keeping with the temperament of the writer.

"When I had buried my dear wife, I waited with some impatience to see what the police would do. I had no great expectations. The English police system is more adjusted to offences against property than to those against the person. Nothing had been stolen, so nothing could be traced; and the clues were certainly very slight. It soon became evident to me that the authorities had given the case up. They gave me no hope that the murderer would ever be identified; and, in fact, it was pretty obvious that they had written the case off as hopeless and ceased to interest themselves in it.

"Of course I could not accept this view. My wife had been murdered. The murder was without extenuation. It had been committed lightly to cover a paltry theft. Now, for murder, no restitution is possible. But there is an appropriate forfeit to be paid; and if the authorities failed to exact it, then the duty of its exaction devolved upon me. Moreover, a person who thus lightly commits murder as an incident in his calling is unfit to live in a community of human beings. It was clearly my duty as a good citizen to see that this dangerous person was eliminated.

"This was well enough in theory, but its realization in practice presented considerable difficulties. The police had (presumably) searched for this person and failed to find him. How was I, untrained in methods of detection, to succeed where the experts had been baffled? I considered my resources. They consisted of a silver teapot and a salver which had been handled by the murderer and which, together, yielded a complete set of finger-prints, and the wisp of hair that I had taken from the hand of my murdered wife. It is true that the police also had finger-marked plate and the remainder of the hair and had been unable to achieve anything by their means; but the value of finger-impressions for the purposes of identification is not yet appreciated outside scientific circles.[1] I fetched the teapot and salver from the drawer in which I had secured them and examined them afresh. The teapot had been held in both hands and bore a full set of prints; and these were supplemented by the salver. For greater security I photographed the whole set of the finger-impressions and made platinotype prints which I filed for future reference. Then I turned my attention to the hair. I had already noticed that it was of a dull gray color, but now, when I came to look at it more closely, I found the color so peculiar that I took it to the window and examined it with a lens.

Footnote 1:The narrative seems to have been written in 1890.—L.W.

"The result was a most startling discovery. It was ringed hair. The gray appearance was due, not to the usual mingling of white and dark hairs, but to the fact that each separate hair was marked by alternate rings of black and white. Now, variegated hairs are common enough in the lower animals which have a pattern on the fur. The tabby cat furnishes a familiar example. But in man the condition is infinitely rare; whence it was obvious that, with these hairs and the finger-prints, I had the means of infallible identification. But identification involves possession of the person to be identified. There was the difficulty. How was it to be overcome?

"Criminals are vermin. They have the typical characters of vermin; unproductive activity combined with disproportionate destructiveness. Just as a rat will gnaw his way through a Holbein panel, or shred up the Vatican Codex to make a nest, so the professional criminal will melt down priceless medieval plate to sell in lumps for a few shillings. The analogy is perfect.

"Now, how do we deal with vermin—with the rat, for instance?

"Do we go down his burrow and reason with him? Do we strive to elevate his moral outlook? Not at all. We induce him to come out. And when he has come out, we see to it that he doesn't go back. In short, we set a trap. And if the rat that we catch is not the one that we wanted, we set it again.

"Precisely. That was the method.

"My housemaid had absconded at the time of the murder; she was evidently an accomplice of the murderer. My cook had left on the same day, having conceived a not unnatural horror of the house. Since then I had made shift with a charwoman. But I should want a housemaid and a cook, and if I acted judiciously in the matter of references, I might get the sort of persons who would help my plans. For there are female rats as well as male.

"But there were certain preliminary measures to be taken. My physical condition had to be attended to. As a young man I was a first-class athlete, and even now I was strong and exceedingly active. But I must get into training and brush up my wrestling and boxing. Then I must fit up some burglar alarms, lay in a few little necessaries and provide myself with a suitable appliance for dealing with the 'catch.'

"This latter I proceeded with at once. To the end of a rod of rhinoceros horn about two feet long I affixed a knob of lead weighing two pounds. I covered the knob with a thickish layer of plaited horsehair, and over this fastened a covering of stout leather; and when I had fitted it with a wrist-strap it looked a really serviceable tool. Its purpose is obvious. It was an improved form of that very crude appliance, the sand-bag, which footpads use to produce concussion of the brain without fracturing the skull. I may describe it as a concussor.

"The preliminary measures were proceeding