The Life Class of the Vienna Academy, 1790, Mezzotint; proof state, sheet: 25 1/2 x 31 3/8 in. (64. 7 x 79. 7 cm), Prints, Johann Jacobe (Austrian, Vienna 1733?1797 Vienna), After Martin Ferdinand Quadal (Austrian, 1736?1811), Members of the Vienna Academy are represented sketching, painting, and sculpting from a live model. Quadal, who specialized in portraits and animal subjects, sits sketching in the right foreground. Jacobe taught mezzotint?an intaglio technique in which subtle gradations of light and shade form the image?at the Vienna Academy