Guilty person would confess under
torture, while God would give an
innocent person the strength to
resist the pain.
Carl W. Scheele devised a test for detecting Arsenic in corpses.
Medical advancements (allowed MEs to determine cause of
Microscopes (allowed for the discovery of more physical
Valentin Ross (German) discovered more precise
method for detecting small amounts of Arsenic
Mathieu Orilla (Spanish) aka 'Father of Forensic
Toxicology' published article on detection of poisons and
Polarizing microscope invented
replaced by fingerprints in 1903
"Criminal Investigation" by Hans Gross (Austrian)
published; the 1st book of criminal investigation using
'Father of Modern Microscopy'
ABO blood typing discovered by Karl Landsteiner
Will west had nearly the same measurements leading to the gradual repacement of the measurment system by the fingerprint system
"Questioned Documents" published by Albert Osborn
Locard's Exchange Principle by Edmond Locard (French)
When 2 objects come into contact with each other, a cross‑
transfer of materials occurs that can connect a criminal
suspect to the victim or the crime scene. Locard also started
the first known police crime lab.
Los Angeles PD Crime Lab (the first in USA)
University of California at Berkeley Criminalistics
Department led by Dr. Paul Kirk
FBI National Laboratory opens under Director J. Edgar
After a home fire a local leader conducted an expirement on pigs and found out that the lungs turn black if something is breathing during a fire. He used the info to see if the husband was dead prior to the fire. He found out that he was dead because his lungs weren't blackened.