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First case of the Chinese using fingerprints to identify people.

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The Chinese book, Hsi Duan Yu, described how to differentiate strangulation and drowning using medical knowledge.

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First documented use of physical matching to convict someone of a crime.

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A Scottish Chemist was the first to use toxicology in trial

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Belgium Chemistry Professor identified vegetable poisons in human tissue.

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A German Scientist discovered that hemoglobin oxidizes hydrogen peroxide and makes it foam up.

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Someone used photography to identify criminals and the documenting of evidence and crime scenes

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Used fingerprints to prove a burglary suspect innocent

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A French policeman identified the first recidivist based on his invention of anthropometry

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someone developed the fingerprint classification system

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Fingerprint Classification System replaced Anthropometry

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Roosevelt established the Federal Bureau of Investigation

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Locard first suggested 12 matching points as positive fingerprint identification