about Edwin Scott?" That let him spin any yarn he chose—if he chose.

He did the cigarette-lighting routine, and said quietly, "Well, I was Edwin Scott, Will." Then, as I waited, "Yes, really me, the real me talking to you. This," he held out a powerful, coppery hand, "once belonged to a man called Marco da Sanhao ... You've heard of transplanting limbs?"

I had. But this man was no transplant job. And if a spinal cord is cut, transplanting legs from Ippalovsky, the primo ballerino, is worthless. I said, "What about it?"

"I was the first—successful—brain transplant in man."

For a moment, it queered me, but only a moment. Hell, you read in fairy tales and fantasy magazines about one man's mind in another man's body, and it's marvelous, not horrible. But—

By curiosity, I know a bit about such things. A big surgery journal, back in the '40s, had published a visionary article on grafting a whole limb, with colored plates as if for a real procedure[A]. Then they'd developed techniques for acclimating a graft to the host's serum, so it would not react as a foreign body. First, they'd transplanted hunks of ear and such; then, in the '60s, fingers, feet, and whole arms in fact.

But a brain is another story. A cut nerve can grow together; every fiber has an insulating sheath which survives the cut and guides growing stumps back to their stations. In the brain and spinal cord, no sheaths; growing fibers have about the chance of restoring contact that you'd have of traversing the Amazon jungle on foot without a map. I said so.

"I know," he said, "I learned all I could, and as near as I can put it, it's like this: When you cut your finger, it can heal in two ways. Usually it bleeds, scabs, and skin grows under the scab, taking a week or so. But if you align the edges exactly, at once, they may join almost immediately healing by First Intent. Likewise in the brain, if they line up cut nerve fibers before the cut-off bit degenerates, it'll join up with the stump. So, take a serum-conditioned brain and fit it to the stem of another brain so that the big fiber bundles are properly fitted together, fast enough, and you can get better than ninety per cent recovery."

"Sure," I said, parading my own knowledge, "but what about injury to the masses of nerve cells? And you'd have to shear off the nerves growing out of the brain."

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