Bloodstain

Examination of the shapes, locations, and distribution of patterns of bloodstains, in order to provide an interpretation of the activities that produced them

Utilizes biology, physics, and mathematics- SCIENTIFIC METHOD

Direct scene observation Careful study of scene photos ***Has to be in color ***Has to have a measurement scale

Locard’s exchange principle holds that teh perpetrator of a crime will bring something into the crime scene and leave it with something from it, and that both can be used as forensic evidence “Every contact leaves a trace”

Earliest known significant study of bloodstain interpretation that has been documented and preserved “Concerning origin, shape, direction, and distribution of the bloodstains following head wounds caused by blows” Used color plates illustrated by his friend Rabbit picture

French Studied bloodstain trajectories and patterns Presented a paper at the 22nd Congress of Forensic Medicine, Research on Blood Spatter Recognized the trigonometric relationship between the length and width of a bloodstain

Wrote Crime Investigation University of California at Berkeley 1955- Testified in State of Ohio v. Samuel Sheppard First case where bloodstain evidence used Marilyn Sheppard was murdered in bed in July of ‘54 Established relative position of attacker and the victim at the time of the beating Recognized drying times, voids Was right about case established relative

• Made the 40 hour cours that trained most analysts Researched and experimented to recreate and duplicate bloodstain patterns observed at crime scenes First major BPA publication, flight characteristics and stain patterns of human blood Most older analysts learned from him Magnet brush also designed by him