"Well, yes, I guess you could say it was a bad man," replied
Tom.

"Ha! If Koku find bad man--bad for that man!" muttered the
giant, as he clasped his two enormous hands together, as though
they were already on the fellow who had tried to do Tom Swift
such an injury.

"I wouldn't like to be that man, if Koku catches him," observed
Ned. "Have you any idea who it could be, Tom?"

"Not the least. Of course I know I have enemies, Ned. Every
successful inventor has persons who imagine he has stolen their
ideas, whether he has ever seen them or not. It may have been one
of those persons, or some half-mad crank, who was jealous. It
would be impossible to say, Ned."

"It wouldn't be Andy Foger, would it?"

"No; I don't believe Andy has been in this neighborhood for
some time. The last lesson we gave him sickened him, I guess."

"How about those diamond-makers, whose secret you discovered?
They wouldn't be trying to get back at you, would they?"

"Well, it's possible, Ned. But I don't imagine so. They seem to
have been pretty well broken up. No, I don't believe it was the
diamond-makers who put this fire bomb in the red shed. Their line
of activities didn't include this branch. It takes a chemist to
know just how to blend the things contained in the bomb, and even