"Ramon, give me a hand, will you?" Cleaver shouted suddenly. "I'm stuck, and-and I don't feel well."

The Jesuit biologist arose in alarm, putting the novel aside. Such an admission from Cleaver was unprecedented.

The physicist was sitting on a pouf of woven rushes, stuffed with a sphagnumlike moss, which was bulging at the equator under his weight. He was half-way out of his glass-fiber jungle suit, and his face was white and beaded with sweat, although his helmet was already off. His uncertain, stubby fingers tore at a jammed zipper.

"Paul! Why didn't you say you were ill in the first place? Here, let go of that; you're only making things worse. What happened?"

"Don't know exactly," Cleaver said, breathing heavily but relinquishing the zipper. Ruiz-Sanchez knelt beside him and began to work it carefully back onto its tracks. "Went a ways into the jungle to see if I could spot more pegmatite lies. It's been in the back of my mind that a pilot-plant for turning out tritium might locate here eventually — ought to be able to produce on a prodigious scale."

"God forbid," Ruiz-Sanchez said under his breath.

"Hm? Anyhow, I didn't see anything. A few lizards, hoppers, the usual thing. Then I ran up against a plant that looked a little like a pineapple, and one of the spines jabbed right through my suit and nicked me. Didn't seem serious, but — "

"But we don't have the suits for nothing. Let's look at it. Here, put up your feet and we'll haul those boots off. Where did you get the — oh. Well, it's angry-looking, I'll give it that. Any other symptoms?"

"My mouth feels raw," Cleaver complained.