said Hewitt, with a shrug of the shoulders, an hour or two after in Sir James’ study. “I can’t say I have a system. I call it nothing but common-sense and a sharp pair of eyes. Nobody using these could help taking the right road in this case. I began at the match, just as the Scotland Yard man did, but I had the advantage of taking a line through three cases. To begin with, it was plain that that match, being left there in daylight, in Mrs. Cazenove’s room, could not have been used to light the table-top, in the full glare of the window; therefore it had been used for some other purpose—What purpose I could not, at the moment, guess. Habitual thieves, you know, often have curious superstitions, and some will never take anything without leaving something behind—a pebble or a piece of coal, or something like that—in the premises they have been robbing. It seemed at first extremely likely that this was a case of that kind. The match had clearly been brought in, because, when I asked for matches, there were none in the stand, not even an empty box, and the room had not been disturbed. Also the match probably had not been struck there, nothing having been heard, although, of course, a mistake in this matter was just possible. This match, then, it was fair to assume, had been lit somewhere else and blown out immediately—I remarked at the time that it was very little burned. Plainly it could not have been treated thus for nothing, and the only possible object would have been to prevent it igniting accidentally. Following on this, it became obvious that the match was used, for whatever purpose, not as a match, but merely as a convenient splinter of wood.
“So far so good. But on examining the match very closely I observed, as you can see for yourself, certain rather sharp indentations in the wood. They are very small, you see, and scarcely visible, except upon narrow inspection; but there they are, and their positions are regular. See, there are two on each side, each opposite the corresponding mark of the other pair. The match, in fact, would seem to have been gripped in some fairly sharp instrument, holding it at two points above and two below—an instrument, as it may at once strike you, not unlike the beak of a bird.
“Now here was an idea. What living creature but a bird could possibly have entered Mrs. Heath’s window without a ladder—supposing no ladder to have been used—or could have got into Mrs. Armitage’s window without lifting the sash higher than the eight or ten inches it was already open? Plainly, nothing. Further, it is significant that only one article was stolen at a time, although others were about. A human being could have carried any reasonable number, but a bird could only take one at a time. But why should a bird carry a match in its beak? Certainly it must have been trained to do that for a purpose, and a little consideration made that purpose pretty clear. A noisy, chattering bird would probably betray itself at once. Therefore it must be trained to keep quiet both while going for and coming away with its plunder. What readier or more probably effectual way than, while teaching it to carry without dropping, to teach it also to keep quiet while carrying? The one thing would practically cover the other.
“I thought at once, of course, of a jackdaw or a magpie—these birds’ thievish reputations made the guess natural. But the marks on the match were much too wide apart to have been made by the beak of either. I conjectured, therefore, that it must be a raven. So that, when we arrived near the coach-house, I seized the opportunity of a little chat with your groom on the subject of dogs and pets in general, and ascertained that there was no tame raven in the place. I also, incidentally, by getting a light from the coach-house box of matches, ascertained that the match found was of the sort generally used about the establishment—the large, thick, red-topped English match. But I further found that Mr. Lloyd had a parrot which was a most intelligent pet, and had been trained into comparative quietness—for a parrot. Also, I learned that more than once the groom had met Mr. Lloyd carrying his parrot under his coat, it having, as its owner explained, learned the trick of opening its cage-door and escaping.
“I said nothing, of course, to you of all this, because I had as yet nothing but a train of argument and no results. I got to Lloyd’s room as soon as possible. My chief object in going there was achieved when I played with the parrot, and induced it to bite a quill toothpick.
“When you left me in the smoking-room, I compared the quill and the match very carefully, and found that the marks corresponded exactly. After this I felt very little doubt indeed. The fact of Lloyd having met the ladies walking before dark on the day of the first robbery proved nothing, because, since it was clear that the match had not been used to procure a light, the robbery might as easily have taken place in daylight as not—must have so taken place, in fact, if my conjectures were right. That they were right I felt no doubt. There could be no other explanation.
“When Mrs. Heath left her window open and her door shut, anybody climbing upon the open sash of Lloyd’s high window could have put the bird upon the sill above. The match placed in the bird’s beak for the purpose I have indicated, and struck first, in case by accident it should ignite by rubbing against something and startle the bird—this match would, of course, be dropped just where the object to be removed was taken up; as you know, in every case the match was found almost upon the spot where the missing article had been left—scarcely a likely triple coincidence had the match been used by a human thief. This would have been done as soon after the ladies had left as possible, and there would then have been plenty of time for Lloyd to hurry out and meet them before dark—especially plenty of time to meet them coming back, as they must have been, since they were carrying their ferns. The match was an article well chosen for its purpose, as being a not altogether unlikely thing to find on a dressing-table, and, if noticed, likely to lead to the wrong conclusions adopted by the official detective.
“In Mrs. Armitage’s case the taking of an inferior brooch and the leaving of a more valuable ring pointed clearly either to the operator being a fool or unable to distinguish values, and certainly, from other indications, the thief seemed no fool. The door was locked, and the gas-fitter, so to speak, on guard, and the window was only eight or ten inches open and propped with a brush. A human thief entering the window would have disturbed this arrangement, and would scarcely risk discovery by attempting to replace it, especially a thief in so great a hurry as to snatch the brooch up without unfastening the pin. The bird could pass through the opening as it was, and would have to tear the pin-cushion to pull the brooch off, probably holding the cushion down with its claw the while.
“Now in yesterday’s case we had an alteration of conditions. The window was shut and fastened, but the door was open—but only left for a few minutes, during which time no sound was heard either of coming or going. Was it not possible, then, that the thief was already in the room, in hiding, while Mrs. Cazenove was there, and seized its first opportunity on her temporary absence? The room is full of draperies, hangings, and what not, allowing of plenty of concealment for a bird, and a bird could leave the place noiselessly and quickly. That the whole scheme was strange mattered not at all. Robberies presenting such unaccountable features must have been effected by strange means of one sort or another. There was no improbability. Consider how many hundreds of examples of infinitely higher degrees of bird-training are exhibited in the London streets every week for coppers.
“So that, on the whole, I felt pretty sure of my ground. But before taking any definite steps I resolved to see if Polly could not be persuaded to exhibit his accomplishments to an indulgent stranger. For that purpose I contrived to send Lloyd away again and have a quiet hour alone with his bird. A piece of sugar, as everybody knows, is a good parrot bribe; but a walnut, split in half, is a better—especially if the bird be used to it; so I got you to furnish me with both. Polly was shy at first, but I generally get along very well with pets, and a little perseverance soon led to a complete private performance for my benefit. Polly would take the match, mute as wax, jump on the table, pick up the brightest thing he could see, in a great hurry, leave the match behind, and scuttle away round the room; but at first wouldn’t give up the plunder to me. It was enough. I also took the liberty, as you know, of a general look round, and discovered that little collection of Brummagem rings and trinkets that you have just seen—used in Polly’s education, no doubt. When we sent Lloyd away, it struck me that he might as well be usefully employed as not, so I got him to fetch the police, deluding him a little, I fear, by talking about the servants and a female searcher. There will be no trouble about evidence; he’ll confess. Of that I’m sure. I know the sort of man. But