Phrenology, or, The doctrine of the mental phenomena (Volume 1)
A phrenology treatise by Johann Gaspar Spurzheim, published in Boston in 1833, aimed at readers interested in the theory that mental faculties map onto regions of the skull. The pictures are stipple and line engravings of a head in profile and of hair and scalp, each marked with Roman numerals that label cranial organ positions. A designer might take from them the fine hatching and stippled tonal modelling of nineteenth-century scientific engraving, and the diagrammatic use of numbered labels over a figure.
