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Franz Ignaz Pruner
Franz Ignaz Pruner (1808–1882) was a German physician, ophthalmologist, and anthropologist who studied the racial structure of Negroes in Egypt. In a book Pruner wrote in 1846, he claimed that Negro blood had a negative influence on the Egyptian moral character. He published a monograph on Negroes in 1861. He claimed that the main feature of the Negro's skeleton is prognathism, which he claimed was the Negro's relation to the ape. He also claimed that Negroes had brains very similar to those of apes and that Negroes have a shortened big toe, a characteristic, he said, that connected Negroes closely to apes.[66]

https://en.wikipedia.org/wiki/Scientific_racism