Perhaps, if the case is one of shooting, the weapon has
vanished. Its discovery may lead to the finding of the
murderer. In one instance where a body was found in the woods
with a bullet through the heart, there was nothing to indicate
who had committed the crime. The only scintilla of evidence
was an exploded cartridge--a small thing on which to build a
case. But the district attorney had the hammer marks upon the
cap magnified several hundred times and then set out to find
the rifle which bore the hammer which had made them.
Thousands of rifles all over the State were examined. At last
in a remote lumber camp was found the weapon which had fired
the fatal bullet. The owner was arrested, accused of the
murder, and confessed his crime. In like manner, if it
becomes necessary to determine where a typewritten document
was prepared the letters may be magnified, and by examining
the ribbons of suspected machines the desired fact may be
ascertained. The magnifying glass still plays an important
part in detecting crime, although usually in ways little
suspected by the general public.
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