It is likely that this was a glass used for cupping procedures. A glass cupping device could also be used to raise a blister on the skin to lance for bleeding or to increase bleeding at the puncture sight. A small incision was made in the patient and a piece of lint placed in the cup and ignited; the open end of the cup was placed over the incision or wound creating a vacuum which drew the desired amount of blood out. Bleeding was an ancient method of treating patients that was still in use during the Civil War, but the practice became increasingly unpopular as the war progressed. Colorless, lead glass, free blown, round, globular cup shape with a folded and flattened rim, base is flattened so that it can sit on table, the pontil mark has been polished, glass is of good quality, slightly misshapen in the manufacturing process - one side of lip is higher than the other.
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