These paradoxes, of course, could be explained in part by the things that Lithia lacked. Like any
large rotating mass, Lithia had a magnetic field of its own, but a planet which almost entirely
lacks iron provides its people with no easy way. to discover magnetism. Radioactivity had been
entirely unknown on the surface of Lithia, at least until the Earthmen had arrived, which
explained the hazy atomic theory. Like the Greeks, the Lithians had discovered that friction
between silk and glass produces one kind of energy or charge, and between silk and amber
another; they had gone on from there to van de Graaf generators, electrochemistry, and the static
jet--but without suitable metals they were unable to make heavy-duty batteries, or to do more
than begin to study electricity in motion.
In the fields where they had been given fair clues, they had made enormous progress. Despite the
constant cloudiness and endemic drizzle, their descriptive astronomy was excellent, thanks to the
fortunate presence of a small moon which had drawn their attention outward early. This in turn
made for basic advances in optics, and thence for a downright staggering versatility in the
working of glass. Their chemistry took full advantage of both the seas and the jungles. From the
one they took such vital and diversified products as agar, iodine, salt, trace metals, and foods of
many kinds. The other provided nearly everything else that they needed: resins, rubbers, woods
of all degrees of hardness, edible and essential oils, vegetable "butters," rope and other fibers,
fruits and nuts, tannins, dyes, drugs, cork, paper. Indeed, the sole forest product which they did
not take was game, and the reason for this neglect was hard to find. It seemed to the Jesuit to be
religious--yet the Lithians had no religion, and they certainly ate many of the creatures of the sea
without qualms of conscience.
He dropped the jungle suit into his lap with a sigh, though the popcorned tooth still was not
completely trimmed hack into shape. Outside, in the humid darkness, Lithia was in full concert. It
was a vital, somehow fresh, new-sounding drone, covering most of the sound spectrum audible to
an Earthman. It came from the myriad insects of Lithia. Many of these had wiry, trilling songs,
almost like birds, in addition to the scrapes and chirrups and wing-case buzzes of the insects of
Earth. In a way this was lucky, for there were no birds on Lithia. Had Eden sounded like that,
before evil had come into the world? Ruiz-Sanchez wondered. Certainly his native Peru sang no
such song...
Qualms of conscience--these were, in the long run, his essential business, rather than the
taxonomical mazes of biology, which had already become tangled into near-hopelessness on
Earth before space flight had come along to add whole new layers of labyrinths for each planet,
new dimensions of labyrinths for each star. It was only interesting that the Lithians were bipedal,
evolved from reptiles, with marsupial-like pouches and pteropsid circulatory systems. But it was
vital that they had qualms of conscience--if they did.
The calendar caught his eye. It was an "art" calendar Cleaver had produced from his luggage
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