scheele

discovered important chemical substances

orfilia

studied poisons and their effects

bertillion

developed a system for identifying people using body measurements

Galton

developed the scientific classification and study of fingerprints

holmes

helped establish scientific crime investigation and crime labs

landsteiner

discovered the ABO blood group system

osborn

helped establish scientific examination of questioned documents

locard

developed the locard exchange principle

goddard

developed methods for comparing bullets and cartridge cases