Forensic sciencethe preparation of scientific evidence to be presented in courtis an increasingly valuable aspect of the investigation of crime. Although rare commentaries on the subject date back many centuries, it is only over the last 200 years that a systematic approach has been madean approach that has accelerated rapidly in the past half-century. The detection and analysis of poisons was the first forensic technique to be developed in a truly scientific manner. This was followed by the realization that fingerprints were unique to every individual; then came the methodical study of firearmsthe science of ballistics.
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