Lettres Camille sur la physiologie de l'homme : exposition prise des phomes de la vie / par Isidore Bourdon.
An 1834 Brussels physiology book by Isidore Bourdon, a French medical writer, presenting phrenology and brain anatomy through numbered engraved plates for a general readership. The plates show the brain's underside, top and side views with numbered cortical regions, and a head profile with dashed outlines marking faculty zones. A designer might take the stippled, shaded engraving style and the clean numbered-diagram layout as a model for scientific charts.
