How did forensic science develop?

The first forensic police laboratory was created in the attic above a court ... Edmond Locard's analysis of particles of dust led him to develop one of the fundamental principles of forensic science

In 1836, Scottish chemist, James Marsh, did the first application of this forensic science technique. This test was actually used successfully in a murder trial at that time ... The mid-1990s saw the development of other tests to examine saliva, semen, sweat and other body fluids.