
previously, Lydia was a warm, Earthlike world with two moons, slightly smaller than Earth but with a
surface closer to three-quarters water rather than five-sixths. It had five major continents, spread across
greater extremes of tropical, desert, temperate, mountain, and polar climates. Pictures obtained from
orbit and lower-altitude probes confirmed Lydian habitats ranging from village communities to
moderate-sized towns that exhibited colorful and picturesque architecture rendered in wood, brick,
adobe, or stone, according to the locality, with spectacular central buildings in some areas, suggestive of
religious or imperialistic societies. Technology did not appear to have progressed beyond primitive or
early agricultural in any area. Of the Oryx itself, there was no sign. Its preliminary assessment was the last
to be heard from it.
* * *
Lydian skies could be spectacular, mixing a palette that ventured from the palest of streaky greens
unveiling the sun at daybreak, to full-bodied violets, lilacs, and lavenders that turned the western clouds
into towering castles of light in the evening. One of the biologists with the Kermes had put forward a
theory attributing the displays to photodissociation in the upper atmosphere of exotic molecules produced
by the planet's lush and varied flora, which made even the tropics of Earth seem unassuming in
comparison. The biologist had been challenged by the mission's head physicist and head climatologist,
both of whom claimed the subject as belonging rightfully to their domain, and a motion was already being
filed back on Earth for the issue to be brought before a scientific arbitration court.
Chelm was seldom drawn into such things. As an archeologist, his field was more self-contained and
defined, and territorial disputes with other disciplines tended to be rare. Colleagues warned him that
invisibility equated to obscurity, and having a low political profile was tantamount to committing career
suicide. Wilbur Teel, his section head, would come poking around, looking for possible areas of overlap
that could be used to pick a fight with the linguists or paleo-sociologists, maybe, and hinting that Chelm
could help his future promotion prospects by taking a more aggressive stance himself. Chelm sometimes
wondered if perhaps he was too accepting and passive. But the thought of a future supposedly
broadened by getting involved in the perennial rivalries and infighting that went on among the upper
administrative echelons back on Earth simply didn't excite him. He wasn't, he supposed, if he was honest
with himself, really that competitively disposed by nature—not that he would have admitted it to the ship's
psycho-counselor. The fact of the matter was that he liked his work and its challenges, especially when it
took him out in the field and among the natives. Times like right now, for instance . . .
He sat on the end of one of the log pilings supporting the boat dock that formed the lower level of
Ag-Vonsar's house, watching the old man scrape an upturned wherrylike craft that had been hauled up
for cleaning and repair. The house was built on stilts like the rest of the settlement at the bottom end of
the lake, with storage space immediately overhead, the general living area above, and sleeping rooms
above that again. The houses were all interconnected by stairways and bridges to form what was
essentially a village over the water. The workmanship was rich, ornate, and precise, bringing to mind a
combination of ancient Mesoamerican pattern work and colorful Chinese intricacy. Besides making
boats, Ag-Vonsar also constructed sluice gates for the system of water channels and locks that irrigated
the surrounding area and allowed the level to be controlled during the season when the river feeding the
lake was in flood. The dry dock and shop that he maintained for this heavier work were part of a
boatyard built along the shore.
What had first attracted Chelm's interest to this place was a long, low, square-formed block
protruding from a hillside and into the water to provide a breakwater and jetty bounding the upper end of
the yard. He had assumed it was cut natural rock, until closer examination showed it to consist of an
artificial material similar to concrete. Some Lydian structures, such as temples, aqueducts, and bridges in
cities and other locations that Terran exploration teams had visited did, it was true, use forms of concrete.
But the type was invariably reminiscent of the kind the Romans had developed: tough, virtually immune to
demolition in some instances, deriving strength from the filiform binding of carefully blended minerals. The
block at the upper end of the lakeside yard, however, was of coarser composition, reinforced internally