"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 steadily. I had put in a fortnight's attendance at a gymnasium under the supervision of Professor Schneipp, the Bavarian Hercules; I had practiced the most approved 'knock-outs' known to my instructor, the famous pugilist, Melchizedeck Cohen (popularly known as 'Slimy' Cohen); I had given up an hour a day to studying the management of the concussor with the aid of a punching-ball; the alarms were ready for fixing, and I even had the address of an undoubtedly disreputable housemaid, when a most unexpected thing happened. I got a premature bite. A fellow actually walked into the trap without troubling me to set it.
"It befell thus. I had gone to bed rather early and fallen asleep at once, but about one o'clock I awoke with that unmistakable completeness that heralds a sleepless night. I lit my candle-lamp and looked round for the book that I had been reading in the evening, and then I remembered that I had left it in the museum. Now that book had interested me deeply. It contained the only lucid description that I had met with of the Mundurucú Indians and their curious method of preserving the severed heads of their enemies; a method by which the head—after removal of the bones—was shrunk until it was no larger than a man's fist.
"I got up, and, taking my lamp and keys, made my way to the museum wing of the house, which opened out of the dining-room. I found the book, but, instead of returning immediately, lingered in the museum, looking about the great room and at the unfinished collection and gloomily recalling its associations. The museum was a gift from my wife. She had built it and the big laboratory soon after we were married and many a delightful hour we had spent in it together, arranging the new specimens in the cases. I did not allow her to work in the evil-smelling laboratory, but she had a collection of her own, of land and fresh-water shells (which were cleaner to handle than the bones); and I was pulling out some of the drawers in her cabinet, and, as I looked over the shells, thinking of the happy days when we rambled by the riverside or over furzy commons in search of them, when I became aware of faint sounds of movement from the direction of the dining-room.
"I stepped lightly down the corridor that led to the dining-room and listened. The door of communication was shut, but through it I could distinctly hear someone moving about and could occasionally detect the chink of metal. I ran back to the museum—my felt-soled bedroom slippers made no sound—and, taking the 'concussor' from the drawer in which I had concealed it, thrust it through the waist-band of my pajamas. Then I crept back to the door.