Bagg on magnetism, or the doctrine of equilibrium:
An 1845 treatise on animal magnetism and mesmeric "equilibrium" by Joseph H. Bagg, printed in Detroit by Bagg and Harmon for lay readers and practitioners of the popular mental sciences. The single plate is a coarse woodcut phrenological head in profile, its scalp divided into numbered faculty regions, offering a diagrammatic head map with heavy black tone and hand-lettered numerals.
