In 1739 Bordeaux's Royal Academy of Sciences announced a contest for the best essay on the sources of "blackness," What is the physical cause of blackness and African hair, and what is the cause of Black degeneration, the contest announcement asked. Sixteen essays, written in French and Latin, were ultimately dispatched from all over Europe. Documented on each page are European ideas about who is Black and why. Looming behind these essays is the fact that some four million Africans had been kidnapped and shipped across the Atlantic by the time the contest was announced. The essays themselves represent a broad range of opinions, which nonetheless circulate around a common theme: the search for a scientific understanding of the new concept of race. More important, they provide an indispensable record of the Enlightenment-era thinking that normalized the sale and enslavement of Black human beings. These never previously published documents survived the centuries tucked away in Bordeaux's municipal library. Translated into English and accompanied by a detailed introduction and headnotes written by Henry Louis Gates, Jr., and Andrew Curran, each essay included in this volume lays bare the origins of anti-Black racism and colorism in the West.