Edmund Locard -Director if the First Crime Lab.

Credit: www.south-wales.police.uk
article: Locard's Exchange Principle 		Other images from this article
Edmund Locard -Director if the First Crime Lab. Hair under a microscope. Trace evidence: fibers can be compared. Paint chip left at a crime scene can be compared.
Edmund Locard -Director if the First Crime Lab., www.south-wales.police.uk