You can be
reasonably sure that the coat was having a ride in your Eagle, but
was Boylan in the coat? That's the question."
"In the coat? Of course he was in it!" cried Tom.
"You can't be sure. Someone may have borrowed his coat to take a
midnight ride in the airship."
"Mr. Boylan doesn't look to be the kind of a man who would lend
his clothes," remarked Tom.
"You never can tell. Someone may have borrowed it without his
knowledge. You'd better go a bit slow, Tom."
"Well, maybe I had. But it's a clue, anyhow."
Ned agreed to this.
"And all I've got to do is to find out who was in the coat when it
was riding about in my airship," went on Tom.
"Yes," said Ned, "and then maybe you'll have some clue to the
disappearance of Mr. Damon."
"Right you are! Come on, let's get busy!"
"As if we hadn't been busy all the while!" laughed Ned. "I'll lose
my place at the bank if I don't get back soon."
"Oh, stay a little longer--a few days," urged Tom. "I'm sure that
something is going to happen soon. Anyhow my photo telephone is
about perfected. But I've just thought of another improvement."
"What is it?"
"I'm going to arrange a sort of dictaphone, or phonograph, so I
can get a permanent record of what a person says over the wire, as
well as get a picture of him saying it. Then everything will be
complete. This last won't be hard to do, as there are several
machines on the market now, for preserving a record of telephone
conversations.
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