1. The Study of Hair Chapter 3

2. Related Areas of Science Biology Structure and function of hair (human and other animals) DNA microscopy Physics Properties of light (fluorescence) Properties of electrons (electron microscope) Math Calculating ratios for medullary index

3. Timeline for Forensic Hair Analysis 1847 – Paris- murder of the Duchesse de Praeslin involved investigation of hairs found at the scene Late 1800’s – investigators recognize the importance of hair as trace evidence 1883 – The Principles of and Practices of Medical Jurisprudence by Alfred Swaine Taylor and Thomas Stevenson – contains a chapter with drawings of magnified human hair with structures labeled AND references English cases in which hair was used as evidence

4. Timeline for Forensic Hair Analysis (con’t) 1910 – The Hair of Man and Animals – by Victor Balthazard and Marcelle Lambert (France)– numerous microscopic studies of hair of humans and most other animals 1934 – use of comparison microscope - Dr. Sydney Smith – helped solve the murder of an 8 yr old girl