This blown and molded square–shaped glass bottle has a narrow neck and rounded shoulders. Its white baked enamel label is framed by a Baroque–style blue and yellow cartouche. The label reads SAL ACETOS in black text, with the first initial of each word in red. The jar would have contained Salt of Acetosa. Rumex acetosa, also known as sorrel, is a plant that was used as a diuretic, an aperient (laxative), and an antidiarrheal.