civilizations."

"You can assume they're authentic. The faculty of this university would
insist on authenticity in the _Darfhulva_--History--Department," she
said.

"Yes! _Darfhulva_--History! And your magazine was a journal of
_Sornhulva_!" Penrose exclaimed. "You have a word, Martha!" It took her
an instant to realize that he had called her by her first name, and not
Dr. Dane. She wasn't sure if that weren't a bigger triumph than learning
a word of the Martian language. Or a more auspicious start. "Alone, I
suppose that _hulva_ means something like science or knowledge, or
study; combined, it would be equivalent to our 'ology. And _darf_ would
mean something like past, or old times, or human events, or chronicles."

"That gives you three words, Martha!" Sachiko jubilated. "You did it."

"Let's don't go too fast," Lattimer said, for once not derisively. "I'll
admit that _darfhulva_ is the Martian word for history as a subject of
study; I'll admit that _hulva_ is the general word and _darf_ modifies
it and tells us which subject is meant. But as for assigning specific
meanings, we can't do that because we don't know just how the Martians
thought, scientifically or otherwise."

He stopped short, startled by the blue-white light that blazed as Sid
Chamberlain's Kliegettes went on. When the whirring of the camera
stopped, it was Chamberlain who was speaking:

"This is the biggest thing yet; the whole history of Mars, stone age to
the end, all on four walls. I'm taking this with the fast shutter, but
we'll telecast it in slow motion, from the beginning to the end. Tony, I
want you to do the voice for it--running commentary, interpretation of
each scene as it's shown. Would you do that?"

Would he do that! Martha thought. If he had a tail, he'd be wagging it
at the very thought.

"Well, there ought to be more murals on the other floors," she said.
"Who wants to come downstairs with us?"

Sachiko did; immediately. Ivan Fitzgerald volunteered. Sid decided to go
upstairs with Tony Lattimer, and Gloria Standish decided to go upstairs,
too. Most of the party would remain on the seventh floor, to help Selim
von Ohlmhorst get it finished. After poking tentatively at the escalator
with the spike of her ice axe, Martha led the way downward.

* * * * *

The sixth floor was _Darfhulva_, too; military and technological
history, from the character of the murals. They looked around the
central h