ESS CASTOR

17th-18th century

This blown and molded square–shaped bottle has a baked enamel label marked <i>ESS CASTOR</i> in black text. The jar would have contained essence of castoreum, a fatty material derived from a beaver gland that was used as a nerve tonic, an antiemetic (to reduce nausea and vomiting), and an emmenagogue (to induce menstruation).