The Chemistry of Blackness: Benjamin Rush, Thomas Jefferson, Everard Home, and the Project of Defining Blackness through Chemical Explanations

Abstract:This article examines the chemistry of race at the turn of the nineteenth century. Physicians, philosophers, and intellectuals from Benjamin Rush to Everard Home defined the skin color of Africans as resulting from the changes of the body's humors (or fluids). Radical physicians like Benjamin Rush believed that he could "cure" African slaves of what he identified as indicative of sickness, their skin color, as they were essentially sick white people in his mind. Overall, the study seeks to explain the medical and chemical understanding of race and the potential for "curing" blackness. Often these cures were linked to balancing and unblocking the fluids. A justification for these ideas comes from cases where people seemed to have spontaneously turned black and experiments where black people were turned white.