Phrenology, or, The doctrine of the mental phenomena / by J.G. Spurzheim.
A phrenology treatise by Johann Spurzheim, published by Harper & Bros. in New York in 1846, drawn from the National Library of Medicine's holdings and presented as a work on the mental faculties of the head. The pictures are fine line engravings of hair and curls marked with Roman numerals to indicate regions of the scalp, plus a plate showing an institutional building in an oval frame. A designer might take from them the sense of hatched, flowing line work for hair and the mid-century habit of labelling anatomical diagrams with numerals.
