Principes de dessin: divisions de la tête et de la figure académique, suivies de quelques notions de perspective ; pour servir de complément au procédé du même auteur, acquis et publié par le Gouvernement en 1844
A French drawing manual of 1857, edited by Amaranthe Roulliet and Johann Heinrich Balzer, teaching students to draw the head and academic figure with a short section on perspective. The pictures show construction grids over frontal heads, proportion divisions marked on ovals, and receding tiled floors with urns and a cypress tree. A designer might take from them the simple grid-and-guideline method for laying out a face and the vanishing-point layout of a receding ground plane.
