Original colour drawing by Korbinian Brodmann, showing cortical areas in the European ground squirrel Spermophilus citellus (MPI Brain Research Archive)
Diagrams from Geometrical psychology, or, The science of representation: an abstract of the theories and diagrams of B. W. Betts (1887) by Louisa S. Cook, which details New Zealander Benjamin Bett’s remarkable attempts to mathematically model the evolution of human consciousness through geometric forms. From the Introduction:
“The symbolic forms which Mr. Betts has evolved through his system of Representation resemble, when developed in two dimensions, conventionalised but very scientifically and beautifully conventionalised leaf-outlines. When in more than two dimensions they approximate to the forms of flowers and crystals. …. The fact that he has accidentally portrayed plant-forms when he was studying human evolution is an assurance to Mr. Betts of the fitness of the symbols he has developed, as it affords presumptive evidence that the laws he is studying intuitively admit of universal application.”
Bourgery, Jean Marc. - Traité complet de l’anatomie de l’homme, par les Drs Bourgery et Claude Bernard et le professeur-dessinateur-anatomiste N.H. Jacob, avec le concours de Ludovic Hirschfeld.
An Inquisitive Youngster, from Birds as Individuals by Len Howard, 1952 (via liquidnight)