Fig. 13. From Illustrissimi philosophi et theologi domini Alberti magni compendiosum insigne ac perutile opus Philosophiae naturalis, Venice, 1496, showing the ventricles of the brain.

This outline of a tripartite division of the brain and its cavities was closely followed throughout the Middle Ages, as was also the curiously naïve and excessively ‘materialistic’ psychology to which it gave rise, and which Manfredi adopts. We illustrate his views of the relationship of the different parts of the brain and their parallelism in mental processes, from a series of diagrams extracted from contemporary works (Figs. 13–18).

Fig. 14. Diagram of the senses, the humours, the cerebral ventricles, and the intellectual faculties. MS. Sloane 2156, folio 11 recto, in the British Museum, being a copy written in 1428 of the De Scientia Perpectiva of Roger Bacon

Fig. 15. From K. Peyligk’s Philosophiae naturalis compendium, Leipzig, 1489. Illustrating the general ideas on anatomy current at the Renaissance.