How to teach according to temperament and mental development or : Phrenology in the school-room and the family / by Nelson Sizer.
An 1877 phrenology teaching manual by Nelson Sizer, published in New York by S.R. Wells and Co., aimed at schoolteachers and families who wanted to read children's temperaments from their heads. The four engraved portraits show a young boy in profile, an eighteenth-century man in a high-collared coat and wig, and two mid-nineteenth-century men in bow ties and cravats, drawn in dense parallel hatching that a designer could borrow for vintage portrait treatments.
