"But, of this friendly chat and tea, I have not the slightest----" "I see, I see; quite erased from the tablet. Pray, sir," with a sudden illumination, "about six years back, did it happen to you to receive any injury on the head? Surprising effects have arisen from such a cause. Not alone unconsciousness as to events for a greater or less time immediately subsequent to the injury, but likewise--strange to add--oblivion, entire and incurable, as to events embracing a longer or shorter period immediately preceding it; that is, when the mind at the time was perfectly sensible of them, and fully competent also to register them in the memory, and did in fact so do; but all in vain, for all was afterwards bruised out by the injury." After the first start, the merchant listened with what appeared more than ordinary interest. The other proceeded: "In my boyhood I was kicked by a horse, and lay insensible for a long time. Upon recovering, what a blank! No faintest trace in regard to how I had come near the horse, or what horse it was, or where it was, or that it was a horse at all that had brought me to that pass. For the knowledge of those particulars I am indebted solely to my friends, in whose statements, I need not say, I place implicit reliance, since particulars of some sort there must have been, and why should they deceive me? You see sir, the mind is ductile, very much so: but images, ductilely received into it, need a certain time to harden and bake in their impressions, otherwise such a casualty as I speak of will in an instant obliterate them, as though they had never been. We are but clay, sir, potter's clay, as the good book says, clay, feeble, and too-yielding clay. But I will not philosophize. Tell me, was it your misfortune to receive any concussion upon the brain about the period I speak of? If so, I will with pleasure supply the void in your memory by more minutely rehearsing the circumstances of our acquaintance." The growing interest betrayed by the merchant had not relaxed as the other proceeded. After some hesitation, indeed, something more than hesitation, he confessed that, though he had never received any injury of the sort named, yet, about the time in question, he had in fact been taken with a brain fever, losing his mind completely for a considerable interval. He was continuing, when the stranger with much animation exclaimed: "There now, you see, I was not wholly mistaken. That brain fever accounts for it all." "Nay; but----" "Pardon me, Mr. Roberts," respectfully interrupting him, "but time is short, and I have something private and particular to say to you. Allow me."