George Combe's "System of Phrenology" was perhaps the most detailed and authoritative popular phrenology text ever written.
Link bellow heads to excerpt from chapter 35, "National character & development of brain". Phrenological analysis on mental faculties, draw from skull samples gathered from the most distant parts of the world.

=>http://pages.britishlibrary.net/phre..._character.htm

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To recognize correct position of brain "organs" on human head I suggest follow page.

Aboriginal peoples from the text above and Races of mankind: [post]