Anweisung zu der Zeichenkunst derer Vierfüsigen Thiere, wie solche nach bestimten Regeln aus der Geometrie u. Perspectiv auf eine leichte Art zu Zeichnen sind
A German treatise of 1766 by Georg Heinrich Werner, held by Heidelberg University Library, teaching readers to draw four-footed animals using geometry and perspective rules. Its engraved plates show dogs, a horse, a donkey and a lion-like animal set out in numbered figures, with construction lines over the proportion diagrams. A designer might borrow the grid-based method of breaking an animal's body into measured segments and labelled reference points.
