. Things were lurching toward
this room, from the laboratory. Alan, with averted face, choked by the
incoming fumes, slammed the door upon the gruesome turmoil.

They took the diminishing drug. The bedroom expanded. The hideous sounds
from the laboratory, and the whole palace now ringing with a wild alarm,
soon faded into blessed remoteness of distance....

"I think this is the way, Alan. Off there--a doorway from my bedroom.
Polter always kept it locked, but it leads into a corridor. We must get
out of here. A crack under the door--is that it, off there?" Dr. Kent
pointed into the gloomy blur of distance. "We're horribly small--it's so
far to run--and I've lost my sense of direction."

The drug had ceased its action. The wooden floor of the room had
expanded to a spread of cellular surface, ridged with broken, tubelike
tunnels; pits and jagged cave-mouths. A knothole yawned like a crater a
hundred feet away.

"We are too small," Glora protested hurriedly. "The door is where you
say, Dr. Kent, but miles away."

With the other drug, the room contracted. The floor surface shrank and
smoothed a little. The door was distinguishable--a square panel several
hundred feet in width and towering into the upper haze. The black line
of the crack was visible along its bottom.

They ran to it. The top of the crack was ten feet above their heads.
They ran under, across the wide intervening darkness toward a glow of
light. Then they came from under the door into a corridor--and shrank
against a cliff wall as with a rush of wind and pounding tread the
blurred shapes of a man's huge feet and legs rushed past. The upper air
was filled with rumbling shouts.

"We must chance it!" exclaimed Dr. Kent. "It's too far in this size. We
must get larger--and if they see us, we'll fight our way out!"

In the turmoil of the doomed palace no one noticed them. They cast aside
all restraint. It was too dangerous to wait. The excessive dose they
took of the drug made the corridor shrink with dizzying speed. They
rushed along its length. Alan hurled a little man aside who was in their
path. They were already larger than Polter's people.

They squeezed out of a shrinking doorway. The dwindling island was a
turmoil. Little figures were pouring from the palace. At the edge of the
water. Alan, Glora and Dr. Kent stood for an instant looking behind
them. The palace was rocking. Its roof heaved upward and then smashed
and fell aside with the clatter o