The High Instep Foot
As the pontil-mark became smaller and not so rough, the dome foot gave place to one which is mainly flat at the base but slightly conical, rising like a low round hillock, to join the stem: seen in profile, these somewhat resemble a leg and a foot with a high instep. No seventeenth-or eighteenth-century stemmed drinking glass except a “firing” glass has a foot with an uniformly flat section.