Wet drug jar.

The inscription means "syrupus extratum althaea" or "syrup of marshmallow extract."
"Originally a compound syrup made from marshmallow root ... mixed with red chick peas, grass root, asparagus, liquorice, raisins, marchmallow leaves, mallow, pellitory of the wall, pimpernel, plantain, and black and white maidenhair fern and four greater and lesser cold seeds, boiled with water and strained; the liquid was then boiled with sugar to make a syrup. Later the formula was reduced to marshmallow root, liquorice and maidenhair fern, or to marshmallow root only, with sugar to make a syrup." See Harrod in Lipsky & Archer, p. 399.
Title from Spencer.
Spencer, K. M. James N. Spencer Collection of English Delftware Apothecary Jars, 5
The apothecary jar is bulbous on spreading foot with a flanged spout, a strap-like handle, and an everted neck. The label panel is straight with a wavy strap-work frame. The body of the jar is decorated with a blue design featuring cherubs with trumpets. The jar, including the rim and the base, has a white glaze. See Spencer Collection.