tle gullies,
which expanded as we climbed up them. It seemed as if we would never
reach the top, but at last we were there. I was aware that the drug had
ceased its action. The yellow, rocky ground was no longer expanding.

We came to the summit and stood to get back our breath. Alan and I gazed
with awe upon the top of a rocky hill. Little buttes and strewn boulders
lay everywhere. It was all naked rock, ridged and pitted, and everywhere
yellow-tinged.

Overhead was distance. I could not call it a sky. A blur was
there--something almost but not quite distinguishable. Then I thought
that I could make out a more solid blur which might be the lower lens of
the microscope above us. And there were blurred, very distant spots of
light, like huge suns masked by a haze, and I knew that they were the
hooded lights of the laboratory room.

Before us, over the brink of a five hundred-foot drop, a great
glistening plain stretched into the distance. I seemed to see where it
ended in a murky blur. And far higher than our hilltop level a
horizontal streak marked the rope railing of the slab.

"Well," said Alan. "We're here." He gazed behind us, back across the
rocky summit which seemed several hundred feet across to its opposite
brink. He was smiling, but the smile faded. "Now what, Glora? Another
pellet?"

"No. Not yet. There is a place where we go down. It is marked in my
mind."

I had a sudden ominous sense that we three were not alone up here.
Glora led us back from the cliff. As we picked our way among the naked
crags, it seemed behind each of them an enemy might be lurking.

"Glora, do you know if any of Dr. Polter's men might have the drug? I
mean, do they come in and out of here?"

She shook her head. "I think not. He lets no one have the drug. He
trusts not anyone. I stole it. I will tell you later. Much I have to
tell you before we arrive."

Alan made a sudden, sidewise leap, and dashed around a rock. He came
back to us, smiling ruefully.

"Gets on your nerves, all of this. I had the same idea you had, George.
Might be someone around here. But I guess not." He took Glora's hand and
they walked in advance of me. "We haven't thanked you yet, Glora," he
added.

"Not needed. I came for help from your world. I followed the Dr. Polter
when he came outward. He has made my world and my people, his slaves. I
came for help. And because I have helped you, needs no thanks."

"But we do thank you, Glora." Alan turned his