Was a time, not so long ago, when he took his abilities for granted. Now he was getting old enough to have to verify them. He thumbed on the safety and holstered the pistol, then picked up the glove and put it on again. Never saw so blasted many land-prawns as this summer. They'd been bad last year, but nothing like this. Even the oldtimers who'd been on Zarathustra since the first colonization said so. There'd be some simple explanation, of course; something that would amaze him at his own obtuseness for not having seen it at once. Maybe the abnormally dry weather had something to do with it. Or increase of something they ate, or decrease of natural enemies. He'd heard that land-prawns had no natural enemies; he questioned that. Something killed them. He'd seen crushed prawn shells, some of them close to his camp. Maybe stamped on by something with hoofs, and then picked clean by insects. He'd ask Ben Rainsford; Ben ought to know. Half an hour later, the scanner gave him another interruption pattern. He laid it aside and took up the small vibrohammer. This time it was a large bean, light pink in color, He separated it from its matrix of flint and rubbed it, and instantly it began glowing. "Ahhh! This is something like it, now!" He rubbed harder; warmed further on his pipe bowl, it fairly blazed. Better than a thousand sols, he told himself. Good color, too. Getting his gloves off, he drew out the little leather bag from under his shirt, loosening the drawstrings by which it hung around his neck. There were a dozen and a half stones inside, all bright as live coals. He looked at them for a moment, and dropped the new sunstone in among them, chuckling happily. * * * * * Victor Grego, listening to his own recorded voice, rubbed the sunstone on his left finger with the heel of his right palm and watched it brighten. There was, he noticed, a boastful ring to his voice--not the suave, unemphatic tone considered proper on a message-tape. Well, if anybody wondered why, when they played that tape off six months from now in Johannesburg on Terra, they could look in the cargo holds of the ship that had brought it across five hundred light-years of space. Ingots of gold and platinum and gadolinium. Furs and biochemicals and brandy. Perfumes that defied synthetic imitation; hardwoods no plastic could copy. Spices. And the steel coffer full of sunstones. Almost all luxury goods, the only really dependable commodities in interstellar trade.