Woodcut of a human head with lines connecting the senses of taste, hearing, sight, and smell to areas of the brain. Appeared in Margarita philosophica nova cui insunt sequentia by Gregor Reisch, 1512. Margarita philosophica is an encyclopedia of knowledge intended as a textbook for youthful students, and contains in twelve books Latin grammar, dialectics, rhetoric, arithmetic, music, geometry, astronomy, physics, natural history, physiology, psychology, and ethics. The usefulness of the work was increased by numerous woodcuts and a full index. The form is catechetical: the scholar questions and the teacher answers. The book was very popular for its comparative brevity and form.