phosphorus to supplement the ocean sediment. The progress of life from the sea to the land was a mechanical [p142]  process of this growing world.

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Nearly two hundred years ago, when Earth established a colony on St. Martin’s, the land surface of the planet had been barren. Only its seas thrived with animal and vegetable life. The necessary machinery and technicians had been supplied by Earth, and the long struggle began to fit the world for human needs. When Zarwell arrived, six months before, the vitalized area already extended three hundred miles along the coast, and sixty miles inland. And every day the progress continued. A large percentage of the energy and resources of the world were devoted to that essential expansion.

The reclam crews filled and sodded the sterile rock, planted binding grasses, grain and trees, and diverted rivers to keep it fertile. When there were no rivers to divert they blasted out springs and lakes in the foothills to make their own. Biologists developed the necessary germ and insect life from what they found in the sea. Where that failed, they imported microorganisms from Earth.

Three rubber-tracked crawlers picked their way down from the mountains until they joined the road passing the belt. They were loaded with ore that would be smelted into metal for depleted Earth, or for other colonies short of minerals. It was St. Martin’s only export thus far.

Zarwell pulled his sun helmet lower, to better guard his hot, dry features. The wind blew continuously on St. Martin’s, but it furnished small relief from the heat. After its three-thousand-mile journey across scorched sterile rock, it sucked the moisture from a man’s body, bringing a membrane-shrinking dryness to the nostrils as it was breathed in. With it came also the cloying taste of limestone in a worker’s mouth.

Zarwell gazed idly about at the other laborers. Fully three-quarters of them were beri-rabza ridden. A cure for the skin fungus had not yet been found; the men’s faces and hands were scabbed and red. The colony had grown to near self-sufficiency, would soon have a moderate prosperity, yet they still lacked adequate medical and research facilities.

Not all the world’s citizens were content.

Bergstrom was waiting in his office when Zarwell arrived that evening.

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