After a moment, I followed an impulse which was part duty to my job and part pity. I tipped the little horror back on its bottom, glad that there was a glove between me and it. Then I did the same thing I would do with a pet puppy or kitten. I set a dish of food—chemically prepared to duplicate the contents of the tubes we had found in the wreck—right down in front of the E.T.L.

It fumbled at the stuff and, possibly because of a gravity two-and-a-half times as great as it was made for, it almost got itself stuck in the mess. But it freed itself. Its mouth-flaps began to make lapping movements as it sucked the nourishment.

I felt prematurely relieved. This was no potentially dominant wizard in a strange body, I told myself. This was pure animal.

Over my helmet radiophone—there was a mike outside the cage, so they could communicate with me when I was inside—I heard Miller say to the reporters:

"The feeding instinct. They've got it, too. Now we know for sure...."

 think that the E.T.L. had colic from that first meal, though, like any half-smart puppy trainer, I tried not to let it eat too much. It writhed for a while, as if in pain. And I was on pins. How was I supposed to know just what was best to feed the thing, so it would survive? Everything was guesswork, varying formulas cautiously, groping. And it wasn't only the food. There was the searching for the temperature, the air-pressure and the degree of dryness at which the E.T.L. seemed most comfortable. And there was also the fiddling around with light-composition and intensities, variable in the sun lamps, to find what seemed best.

We seemed to have figured things out right—or else the monster was just rugged. It shed several skins, thrived and grew active. Its size increased steadily. And other things began to grow in that cage. Odd, hard-shelled, bluish-green weeds; lichenous patches, dry as dust; invisible, un-Earthly bacteria—all were harmless, possibly even beneficial, to my charge.

How did all this stuff come into being? Miller and Craig had examined the dried clay of the E.T.L.'s discarded casing with microscopes. They scraped dust from every fragment of the wreck that hadn't been blasted too much with fire, and made cultures. They were looking for spores and seeds and microbes. And it wasn't long before they had classified quite a list of other-world biological forms. The most common of these they transplanted into the cage.

Often I 

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