xclaimed. "How about Peggy? You must see how she is!"

"Never mind," answered Crane's voice cheerily. "She is coming to
nicely."

Glancing around quickly, they saw that Crane had already revived the
stranger, and that DuQuesne was not in sight. Dorothy blushed, the vivid
wave of color rising to her glorious hair, and hastily disengaged her
arms from around her lover's neck, drawing away from him. Seaton, also
blushing, dropped his arms, and Dorothy floated away from him,
frantically clutching at a brace just beyond reach.

"Pull me down, Dick!" she called, laughing gaily.

Seaton, seizing her instinctively, neglected his own anchorage and they
hung in the air together, while Crane and Margaret, each holding a
strap, laughed with unrestrained merriment.

"Tweet, tweet--I'm a canary!" chuckled Seaton. "Throw us a rope!"

"A Dicky-bird, you mean," interposed Dorothy.

"I knew that you were a sleight-of-hand expert, Dick, but I did not know
that levitation was one of your specialties," remarked Crane with mock
gravity. "That is a peculiar pose you are holding now. What are you
doing--sitting on an imaginary pedestal?"

"I'll be sitting on your neck if you don't get a wiggle on with that
rope!" retorted Seaton, but before Crane had time to obey the command
the floating couple had approached close enough to the ceiling so that
Seaton, with a slight pressure of his hand against the leather, sent
them floating back to the floor, within reach of one of the handrails.

Seaton made his way to the power-plant, lifted in one of the remaining
bars, and applied a little power. The Skylark seemed to jump under them,
then it seemed as though they were back on Earth--everything had its
normal weight once more, as the amount of power applied was just enough
to equal the acceleration of gravity. After this fact had been
explained, Dorothy turned to Margaret.

"Now that we are able to act intelligently, the party should be
introduced to each other. Peggy, this is Dr. Dick Seaton, and this is
Mr. Martin Crane. Boys, this is Miss Margaret Spencer, a dear friend of
mine. These are the boys I have told you so much about, Peggy. Dick
knows all about atoms and things; he found out how to make the Skylark
go. Martin, who is quite a wonderful inventor, made the engines and
things for it."

"I may have heard of Mr. Crane," replied Margaret eagerly. "My father
was an inventor, and I have heard him speak of a man named Crane who
invented