Masterpieces of Mystery in Four Volumes: Detective Stories. Various

must have had a great deal of trouble."

      "We had; but the reward offered is prodigious."

      "You include the grounds about the houses?"

      "All the grounds are paved with brick. They gave us comparatively little trouble. We examined the moss between the bricks and found it undisturbed."

      "You looked among D——'s papers, of course, and into the books of the library?"

      "Certainly; we opened every package and parcel; we not only opened every book, but we turned over every leaf in each volume, not contenting ourselves with a mere shake, according to the fashion of some of our police officers. We also measured the thickness of every book-cover with the most accurate measurement, and applied to each the most jealous scrutiny of the microscope. Had any of the bindings been recently meddled with, it would have been utterly impossible that the fact should have escaped observation. Some five or six volumes, just from the hands of the binder, we carefully probed, longitudinally, with the needles."

      "You explored the floors beneath the carpets?"

      "Beyond doubt. We removed every carpet and examined the boards with the microscope."

      "And the paper on the walls?"

      "Yes."

      "You looked into the cellars?"

      "We did."

      "Then," I said, "you have been making a miscalculation, and the letter is not upon the premises, as you suppose."

      "I fear you are right there," said the Prefect. "And now, Dupin, what would you advise me to do?"

      "To make a thorough research of the premises."

      "That is absolutely needless," replied G——. "I am not more sure that I breathe than I am that the letter is not at the hotel."

      "I have no better advice to give you," said Dupin. "You have, of course, an accurate description of the letter?"

      "Oh, yes!" and here the Prefect, producing a memorandum-book, proceeded to read aloud a minute account of the internal, and especially of the external, appearance of the missing document. Soon after finishing the perusal of this description he took his departure, more entirely depressed in spirits than I had ever known the good gentleman before.

      In about a month afterward he paid us another visit, and found us occupied very nearly as before. He took a pipe and a chair and entered into some ordinary conversation. At length I said:

      "Well, but, G——, what of the purloined letter? I presume you have at last made up your mind that there is no such thing as overreaching the Minister?"

      "Confound him! say I—yes; I made the re-examination, however, as Dupin suggested, but it was all labour lost, as I knew it would be."

      "How much was the reward offered, did you say?" asked Dupin.

      "Why, a very great deal, a very liberal reward; I don't like to say how much, precisely; but one thing I will say—that I wouldn't mind giving my individual check for fifty thousand francs to anyone who could obtain me that letter. The fact is, it is becoming of more and more importance every day; and the reward has been lately doubled. If it were trebled, however, I could do no more than I have done."

      "Why, yes," said Dupin, drawlingly, between the whiffs of his meerschaum, "I really—think, G——, you have not exerted yourself—to the utmost in this matter. You might—do a little more, I think, eh?"

      "How? in what way?"

      "Why—puff, puff—you might—puff, puff—employ counsel in the matter, eh?—puff, puff, puff. Do you remember the story they tell of Abernethy?"

      "No; hang Abernethy!"

      "To be sure! hang him and welcome. But, once upon a time, a certain rich miser conceived the design of sponging upon this Abernethy for a medical opinion. Getting up, for this purpose, an ordinary conversation in a private company, he insinuated his case to the physician as that of an imaginary individual.

      "'We will suppose,' said the miser, 'that his symptoms are such and such; now, Doctor, what would you have directed him to take?'

      "'Take!' said Abernethy, 'why, take advice, to be sure.'"

      "But," said the Prefect, a little discomposed, "I am perfectly willing to take advice and to pay for it. I would really give fifty thousand francs to anyone who would aid me in the matter."

      "In that case," replied Dupin, opening a drawer and producing a checkbook, "you may as well fill me up a check for the amount mentioned. When you have signed it I will hand you the letter."

      I was astounded. The Prefect appeared absolutely thunderstricken. For some minutes he remained speechless and motionless, looking incredulously at my friend with open mouth, and eyes that seemed starting from their sockets; then, apparently recovering himself in some measure, he seized a pen, and after several pauses and vacant stares finally filled up and signed a check for fifty thousand francs and handed it across the table to Dupin. The latter examined it carefully and deposited it in his pocketbook; then, unlocking an escritoire, took thence a letter and gave it to the Prefect. This functionary grasped it in a perfect agony of joy, opened it with a trembling hand, cast a rapid glance at its contents, and then, scrambling and struggling to the door, rushed at length unceremoniously from the room and from the house without having uttered a syllable since Dupin had requested him to fill up the check.

      When he had gone, my friend entered into some explanations.

      "The Parisian police," he said, "are exceedingly able in their way. They are persevering, ingenious, cunning, and thoroughly versed in the knowledge which their duties seem chiefly to demand. Thus, when G—— detailed to us his mode of searching the premises at the Hotel D——, I felt entire confidence in his having made a satisfactory investigation, so far as his labours extended."

      "'So far as his labours extended'?" said I.

      "Yes," said Dupin. "The measures adopted were not only the best of their kind, but carried out to absolute perfection. Had the letter been deposited within the range of their search, these fellows would, beyond a question, have found it."

      I merely laughed, but he seemed quite serious in all that he said.

      "The measures, then," he continued, "were good in their kind and well executed; their defect lay in their being inapplicable to the case and to the man. A certain set of highly ingenious resources are, with the Prefect, a sort of Procrustean bed, to which he forcibly adapts his designs. But he perpetually errs by being too deep or too shallow for the matter in hand; and many a schoolboy is a better reasoner than he. I knew one about eight years of age, whose success at guessing in the game of 'even and odd' attracted universal admiration. This game is simple, and is played with marbles. One player holds in his hand a number of these toys and demands of another whether that number is even or odd. If the guess is right, the guesser wins one; if wrong, he loses one. The boy to whom I allude won all the marbles of the school. Of course he had some principle of guessing; and this lay in mere observation and admeasurement of the astuteness of his opponents. For example, an arrant simpleton is his opponent, and, holding up his closed hand, asks, 'Are they even or odd?' Our schoolboy replies, 'Odd,' and loses; but upon the second trial he wins, for he then says to himself: 'The simpleton had them even upon the first trial, and his amount of cunning is just sufficient to make him have them odd upon the second; I will therefore guess odd;' he guesses odd and wins. Now, with a simpleton a degree above the first, he would have reasoned thus: 'This fellow finds that in the first instance I guessed odd, and in the second he will propose to himself, upon the first impulse, a simple variation from even to odd, as did the first simpleton; but then a second thought will suggest that this is too simple a variation, and finally he will decide upon putting it even as before. I will therefore guess even;'—he guesses even and wins. Now this mode of reasoning in the schoolboy, whom his fellows termed 'lucky,'—what, in its last analysis, is it?"

      "It is merely," I said, "an identification of the reasoner's intellect with that of