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  Physicians analysis to connect a bullet to a murder weapon
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  A scottish chemist created a arsenic deteching chemical which was used in a murder trial
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  The commissioner of metro police london created his own system based on direction, flow and pattern of finger prints
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  the first crime lab was established by a french man who was known as the "sherlock holmes of france".
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  american physician calvin created the comparison microscope to match bullets to shell casing
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  first crime lab for the F.B.I
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  Karl landstenir won a noble prize for classifying human blood
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  tests for semen, saliva and other bodily fluids were developed