Sir Grafton Elliot Smith (1871–1937), a New South Wales native working in Cairo, identified 50 areas.[6] Korbinian Brodmann worked on the brains of diverse mammalian species and developed a division of the cerebral cortex into 52 discrete areas (of which 44 in the human, and the remaining 8 in non-human primate brain).[7][8] Brodmann used numbers to categorize the different architectural areas[4] and he believed that each of these regions served a unique functional purpose.[5]