was damaged, if not absolutely loosened at the foundations. You will
have to pay the damages!" Then turning, and seeing about two score of
young ladies behind her on the flat roof, each young lady eying with
astonishment, not unmixed with admiration, the airship, the elderly
one added: "Pupils! To your rooms at once! How dare you leave without
permission?"

"Oh, Miss Perkman!" exclaimed a voice, at the sound of which Tom
started. "Mayn't we see the airship? It will be useful in our natural
philosophy study!"

Tom looked at the young lady who had spoken. "Mary Nestor!" he
exclaimed.

"Tom-I mean Mr. Swift!" she rejoined. "How in the world did you get
here?"

"I was going to ask you the same question," retorted the lad. "We flew
here."

"Young ladies! Silence!" cried Miss Perkman, who was evidently the
principal of the school. "The idea of any one of you daring to speak
to these-these persons-without my permission, and without an
introduction! I shall make them pay heavily for damaging my seminary,"
she added, as she strode toward Mr. Sharp, who, by this time, was out
of the car. "To your rooms at once!" Miss Perkman ordered again, but
not a young lady moved. The airship was too much of an attraction for
them.