Kielland scowled. "What are you going to do with the dredge--just leave it there?" he asked angrily. "No--I'm going to dig it out, again," said Barton, "after we take another week off to drum into those quarter-brained mud-hens just what it is we want them to do--again--and then persuade them to do it--again--and then hope against hope that nothing happens along to distract them--again. Any suggestions?" Simpson shook his head. "Take a rest, Barton. Things will look brighter in the morning." "Nothing ever looks brighter in the morning," said Barton, and he sloshed angrily off toward the Administration island. "You see?" said Simpson. "Or do you want to look around some more?" * * * * * Back in Administration shack, Kielland sprayed his throat with Piper Fortified Bio-Static and took two tetracycline capsules from his samples case as he stared gloomily down at the little gob of blue-gray mud on the desk before him. The Venusian bonanza, the sole object of the multi-million-dollar Piper Venusian Installation, didn't look like much. It ran in veins deep beneath the surface. The R&D men had struck it quite by accident in the first place, sampled it along with a dozen other kinds of Venusian mud--and found they had their hands on the richest 'mycin-bearing bacterial growth since the days of the New Jersey mud flats. The value of the stuff was incalculable. Twenty-first century Earth had not realized the degree to which it depended upon its effective antibiotic products for maintenance of its health until the mutating immune bacterial strains began to outpace the development of new antibacterials. Early penicillin killed 96 per cent of all organisms in its spectrum--at first--but time and natural selection undid its work in three generations. Even the broad-spectrum drugs were losing their effectiveness to a dangerous degree within decades of their introduction. And the new drugs grown from Earth-born bacteria, or synthesized in the laboratories, were too few and too weak to meet the burgeoning demands of humanity-- Until Venus. The bacteria indigenous to that planet were alien to Earth--every attempt to transplant them had failed--but they grew with abandon in the warm mud currents of Venus. Not all mud was of value: only the singular blue-gray stuff that lay before Kielland on the desk could produce the 'mycin-like tetracycline derivative that was more powerful than the best of Earth-grown wide spectrum antibiotics, with few if any of the unfortunate side-effects of the Earth products.