Mercury instructing Jupiter [graphic].published 5 August 1777.engA cherubic Mercury (left) and Jupiter (right) sit on a rock in a mountainous and tree-dotted landscape. Mercury holds his caduceus in his left arm and rests his foot on a small shield (?) while Jupiter seated on the ground to the right, holds his arm around the neck of a swan. On a shelf above Mercury's head a rooster looks down on the sceneTitle from item.Numbered in plate: 265.