In one of the first trials followed by the public through daily newspaper reports, Frenchwoman Marie-Fortunée Lafarge, who stood accused of poisoning her husband with arsenic, was found guilty of murder. Her conviction in 1840 was the first to be based heavily on direct forensic toxicological evidence. During the trial, local experts presented contradictory testimony regarding the presence of arsenic in the victim’s body, and it was ultimately exhumed and tested using what new detection method? Discuss