Lacassagne was a principal founder in the fields of medical jurisprudence and criminal anthropology.
Lacassagne became famous with his expertises of various criminal affairs, including the "malle à Gouffé" in 1889,[REF] the assassination of President Sadi Carnot, stabbed in 1894 by the Italian anarchist Caserio, or of Joseph Vacher (1869-1898), one of the first known French serial killers [REF].