Creative Books

"What do you see?"
"Metal filings on the grooves of these files," said the young
inventor. "And, unless I'm greatly mistaken, the particles of
filings are from the case of my aircraft silencer!"
"What!" cried the machinist. "Do you mean those are the files
used in weakening the outer case of your new machine, so that it
burst a little while ago?"
"That what I think," answered Tom. "I know it sounds pretty
far-fetched," he went on. "But take a look for yourself. If those
particles on, the files aren't exactly of the same color and
texture as the material of which the silencer case is made, I'll
never build another machine."
Jackson peered through the powerful glass moving out a little
farther from the shack, so as to get the best light possible on
the subject of his examination. It was fast getting dark, but
there was enough glow in the western sky for his purpose.
"Am I right?" asked Tom.
"You're right!" declared his helper. "This is exactly the same
metal as that of which your silencer case is made. It's a
peculiar mixture of aluminum and vanadium steel.


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