Dalam bukunya berjudul The Natural Varieties of Mankind, Johann Friedrich Blumenbach yang diterbitkan tahun 1775 mengajukan lima kelompok besar : "ras Kaukasoid", "ras Mongoloid", "ras Etiopia" (yang kemudian dinamakan "ras Negroid"), "ras Indian" dan "ras Melayu", namun dia tidak mengusulkan peringkatan apa pun antara para ras.
The 1775 treatise "The Natural Varieties of Mankind", by Johann Friedrich Blumenbach proposed five major divisions: the Caucasoid race, the Mongoloid race, the Ethiopian race (later termed Negroid), the American Indian race, and the Malayan race, but he did not propose any hierarchy among the races.WikiMatrix WikiMatrix