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Teeth Identification
Paul Revere recognizes dentures he had made for his friend Dr. Joseph Warren and thus identifies the doctor’s body in a mass grave at Bunker Hill. -
Fingerprint Classification System
Johannes Purkinje (1787–1869) devises the first crude fingerprint classification system. -
Bullet Matching
Henry Goddard (1866–1957) matches two bullets to show they came from the same bullet mould. -
Hair Analysis
The first paper on hair analysis is published in France. -
Blood Test
Izaak van Deen (1804–1869) develops the guaiac test for blood. -
Discovery of DNA
Friedrich Miescher (1844–1895) discovers DNA. -
Powder Dusting
Henry Faulds (1843–1930) shows that powder dusting will expose latent fingerprints. -
Fingerprint Classification
Sir Edward Richard Henry devises a fingerprint classification system that is the basis for those used in Britain and America today. -
ABO Blood Type System
Karl Landsteiner (1868–1943) delineates the ABO blood typing system. -
Genetic Information
Oswald Avery (1877–1955), Colin MacLeod (1909–1972), and Maclyn McCarty (1911–2005) discover that DNA carries genetic information.