upon the glass city softly and gave to the buildings many
delicate, shifting hues which were very pretty to see.

But not a sound had broken the stillness since the strangers had
arrived, except that of their own voices. They began to wonder if
there were no people to inhabit this magnificent city of the inner
world.

Suddenly a man appeared through a hole in the roof next to the one they
were on and stepped into plain view. He was not a very large man, but
was well formed and had a beautiful face--calm and serene as the face
of a fine portrait. His clothing fitted his form snugly and was
gorgeously colored in brilliant shades of green, which varied as the
sunbeams touched them but was not wholly influenced by the solar rays.

The man had taken a step or two across the glass roof before he noticed
the presence of the strangers; but then he stopped abruptly. There was
no expression of either fear or surprise upon his tranquil face, yet he
must have been both astonished and afraid; for after his eyes had
rested upon the ungainly form of the horse for a moment he walked
rapidly to the furthest edge of the roof, his head turned back over his
shoulder to gaze at the strange animal.

"Look out!" cried Dorothy, who noticed that the beautiful man did not
look where he was going; "be careful, or you'll fall off!"

But he paid no attention to her warning. He reached the edge of the
tall roof, stepped one foot out into the air, and walked into space as
calmly as if he were on firm ground.

The girl, greatly astonished, ran to lean over the edge of the roof,
and saw the man walking rapidly through the air toward the ground.
Soon he reached the street and disappeared through a glass doorway into
one of the glass buildings.

"How strange!" she exclaimed, drawing a long breath.

"Yes; but it's lots of fun, if it IS strange," remarked the small voice
of the kitten, and Dorothy turned to find her pet walking in the air a
foot or so away from the edge of the roof.

"Come back, Eureka!" she called, in distress, "you'll certainly be
killed."

"I have nine lives," said the kitten, purring softly as it walked
around in a circle and then came back to the roof; "but I can't lose
even one of them by falling in this country, because I really couldn't
manage to fall if I wanted to."

"Does the air bear up your weight?" asked the girl.

"Of course; can't you see?" and again the kitten wandered into the air
and back to the edg