lived in small groups in far-flung underground Centers, if not entirely
alone, as did Dmu Dran. Dmu Dran's cranium was also slightly smaller in
diameter.
Now an odd expression touched the flat countenance of the Master.
"Aydem," he said, "You have seen the contents of these halls many
times. But Ayveh has not. So come with me now, both of you. We have a
little time, and I wish to view some specimens. It is many years since I
last examined them."
He turned his chair, and Aydem, exchanging a look of puzzlement with
Ayveh, followed him down the corridor between the great, glass-enclosed,
hermetically sealed exhibits.
As they went, light sprang on alongside them, activated by the heat of
their bodies on thermocouples, and died away behind them. The Master led
them several hundred yards, and halted at last in a section devoted to
ancient animals of the Earth's youth.
There were here many beasts, huge and ferocious in appearance,
reproduced in their natural environment, seen, save by Aydem, not more
than half a dozen times a year. Only six or eight Masters were born each
year, just enough to keep the total of a thousand from dwindling. They
visited the Repository of Natural Knowledge in the course of their
educational studies.
In the glass cases that lined the miles of corridors were exhibits,
many of them animated so cunningly that the artificial replicas of man
and animal of the past seemed endowed with life, encompassing all the
natural history of the world from the mists of the unknown, millions of
years before, to the present day. But since the great brains of the
Masters needed to be apprised of a fact but once to make it theirs
forever, there was never really occasion for a Master to come here
twice.
Now Dmu Dran, Aydem and Ayveh stood before a great, orange-colored
beast with black stripes, a snarl frozen upon his features, huge fangs,
many inches in length, protruding from his jaws. Even though he was but
a model of a beast dead many millennia, Ayveh instinctively drew closer
to Aydem, as if the creature were indeed about to leap, and as if they
were part of that group of men and women, much like themselves, that
faced it in desperation with long, pointed sticks in their hands.
"The saber-tooth tiger," Dmu Dran said. "When it reigned on this Earth
uncounted years ago, it was Master of Aiden, the world above, a scourge
feared and hated by all other animals. For many thousands of years it
grew more and more powerful, its dominance contested by few. By its
great teeth it was known—terrible weapons for rending and tearing its
prey. But in the end it ceased to be. Why did a beast like that, which
no natural enemy could oppose, die, think you?"
"It must indeed have been a fearful opponent that conquered it,
Master," Ayveh ventured uncertainly.
What might have been a smile, had a Master known smiling, rippled over
the pale moonface.
"Nature killed it," Dmu Dran informed them. "Nature destroyed it by
her very generosity. Those tusks you see that gave it its name—Nature
continued to add to their length and strength. But, alas! In her
enthusiasm, she made them so long in the course of time that their
possessor could not close its mouth, could not eat, and so eventually
starved to death. Aye, Nature evolved her great and dread child right
out of existence."
"That was indeed strange." Aydem frowned. "I do not understand. Why
did she do so?"
"Nature has curious ways." Dmu Dran shrugged. "And having an infinity
of time, she can afford an infinity of experiments. What she is not
satisfied with, though she has made it supreme, she destroys."
Dmu Dran shot his chair a few yards to the left.
"And here," he said, "is another great beast that was once master of