rouched at the edge of the jungle, where the clearing began, Paula heard four shots. Two in quick succession, and a wait of minutes. Then a third, and another long wait, and then the last. Then silence. Paula began to shiver. Bell had helped her ashore from the raft and insisted on her waiting at the edge of the jungle.

"Not that you'll be any safer," he had told her grimly, "but that I may be. One person can move more quickly than two. And if I'm chased I'll plunge for the place you're hidden, and you can open fire. Then the two of us might hold them off."

"Why?" Paula said slowly.

And Bell caught at her wrist.

"Don't let me hear you talk like that!" he said sharply. "We're going to beat this thing! We've got to! And being desperate helps, but being in despair doesn't help a bit. Buck up!"

He frowned at her until she smiled.

"I will not despair again without your permission," she told him. "Really. I will not."

He found her a hiding-place and went cautiously out into the clearing, still frowning.