crop of mysteries about the planet would almost certainly be achieved only at the cost of creating an even greater number of new ones. Even the guide, who was admittedly no scientist, had expressed a similar opinion, though his was based on a general pessimism bred of familiarity with the planet. However, he had undertaken to get them to the sort of country they wanted; and from then on the problem solving was not his affair.

The scientists, whatever may have been their feeling about matters of personal safety, were eager to start, which tended to cause rapid progress in McLaughlin's animal recognition school. Another factor tending toward the same result was that there was little in Emeraude for such men to do, except learn. The town was still small. It had a spaceport and airport, which furnished little entertainment, docks which could amuse for a while but not indefinitely, and warehouses which were completely uninteresting to geologists, paleontologists and archaeologists. There was no museum. The numerous specimens of mineral, animal, and vegetable matter collected on the planet invariably wound up on outbound spacecraft. The zoo, which the town maintained for purely practical reasons, was about the only thing that was left.

In consequence, not many days passed before all four scientists were able to meet McLaughlin's requirements. Sulewayo was annoyed by the guide's addition of a short postgraduate course in edible flora and fauna, but admitted that the knowledge might well be useful. However, he made no secret of his satisfaction when McLaughlin finally announced that, as far as he was concerned, the journey could begin at any time.

All four rechecked their equipment—that of Lampert was by far the bulkiest—and, everyone satisfied with the group's ability both to live and to work in the steam bath that was the world of Viridis, they watched the harbor on which Emeraude was located shrink and blend into the rest of the shoreline behind them. Within a few minutes only the restless surface of Green Bay was visible through the ever-present haze....

The jaws of the Felodon abruptly stopped moving and its forelegs straightened, bringing the fanged head up and away from the kill it had just made.

If a man had been there he would neither have seen nor heard the disturbing factor, for a thunderstorm a few miles to the west was emitting an almost continuous growl and the towering trees shut out nearly all the sky. Nevertheless the beast appeared to sense something out of the ordinary. It twisted its short but supple 

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