Traité élémentaire des règles du dessin
Traité élémentaire des règles du dessin is a French drawing manual by Jean Bosio, published in Paris in 1800 by the author with a printer at the Faubourg St.-Honoré, for students learning to draw the human figure. Its plates are fine-line engravings of anatomy and proportion: a forearm and musculature with lettered keys, a torso in three-quarter view, and a head shown with a measuring grid and a row of profiles from different angles. A designer could borrow the grid-based method of breaking the head and figure into measured segments, and the clear keyed labelling used to tie anatomy to form.
