An Annular Graduated Base Phrenometer

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This apparatus features an annular graduated base holding the base parallel to the brain of the subject. Stating that the personality traits of a person can be determined by the shape of their head. Phrenology is based on the concept that the brain is the organ of the mind

Source

Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)

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