Cupping Glass

Cupping glasses like this one have been used to treat illnesses for centuries. When the glass was heated and placed against the skin, the resulting suction would draw blood out of the body through an incision. Bloodletting was a common practice in the 1700s.

ID 30242
Archeologists uncovered this object at the site of the National Constitution Center in Philadelphia during an excavation from 2000 to 2003.