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,
