- In 1899, Francois Goron, a forensic scientist, noticed one key detail of the unknown victim: their dyed hair. This discovery led the scientists to uncover the identity of the victim.
- In 1910, an unprecedented tome called The Hair of Man and Animals was published by forensic scientists Marcelle Lambert and Victor Balthazard, which includes many microscopic studies of hair from mammals.
- Comparison microscopes, which give a side-by-side view of two hairs or fibers, first happened in 1934, spearheaded by Dr. Sydney Smith.
|View from a comparison microscope|