Josiah Clark Nott (March 31, 1804 – March 31, 1873) was an American physician, surgeon, and ethnologist whose work in the antebellum South left a lasting, if controversial, mark on both medical practice and racial theory. Best known as a leading exponent of polygenism—the belief that human races originated from separate creations rather than a single ancestor—Nott’s ideas shaped the scientific and social discourse on race in the decades before the Civil War. His writings, often steeped in prejudice, were used to justify slavery and racial hierarchies, while his medical contributions, particularly in Mobile, Alabama, advanced professional standards in the field.
Born in Columbia, South Carolina, Nott was the son of Abraham Nott, a prominent judge and president of the South Carolina Court of Appeals, and Angelica Mitchell, a native of South Carolina’s upcountry. Raised in a privileged household, Nott pursued a rigorous education, attending South Carolina College (now the University of South Carolina), followed by the New York College of Physicians and Surgeons and the Medical School of the University of Pennsylvania. After graduating, he furthered his medical training in Paris in 1832, immersing himself in the latest European medical practices. In 1832, he married Sarah Cantey Deas, with whom he had seven children, though only one, Josiah Jr., outlived his parents.
In 1836, Nott settled in Mobile, Alabama, where he established himself as a skilled physician and surgeon. His medical writings, published in leading U.S. journals, addressed topics ranging from yellow fever to surgical techniques, earning him a national reputation. Nott’s commitment to professionalizing medicine led him to advocate for higher certification standards and the exclusion of unqualified practitioners, significantly influencing medical practice in Alabama.
While Nott’s medical career was distinguished, his legacy is most closely tied to his advocacy of polygenism, a theory positing that human races were distinct species with separate origins. Influenced by Samuel George Morton, a pioneer of physical anthropology who used cranial measurements to argue for racial differences, Nott embraced polygenism as a scientific framework to assert the inherent inferiority of African Americans and other non-white groups. He rejected monogenism—the belief in a single human origin, often aligned with biblical accounts—as “absurd” and lacking scientific or scriptural basis.
Nott’s most influential work, Types of Mankind (1854), co-authored with Egyptologist George R. Gliddon, was a seminal text of the American School of Ethnology. Dedicated to Morton, the 738-page volume synthesized evidence from craniology, Egyptology, and philology to argue that races were fixed, unequal species suited to distinct “zoological provinces.” The book, which included contributions from Louis Agassiz, became a bestseller, with nine editions by 1900, popularizing polygenist ideas among both scientists and the public. Nott’s rhetoric was overtly racist, referring to his research as “niggerology” and aiming to provide scientific justification for slavery by proving African inferiority.
In 1856, Nott hired Henry Hotze to translate Arthur de Gobineau’s An Essay on the Inequality of the Human Races, a foundational text of biological racism. Nott appended his findings to the translation, though Gobineau later criticized Hotze for omitting key passages on American slavery. The following year, Nott and Gliddon published Indigenous Races of the Earth (1857), further elaborating their racial hierarchy theories. These works positioned Nott as a central figure in the polygenist movement, alongside Morton, Gliddon, and Agassiz, whose support lent mainstream credibility to the theory during the 1840s and 1850s.
Nott’s arguments were not without opposition. Abolitionist churches, African American scholars like Frederick Douglass, and scientists such as Rev. John Bachman challenged polygenism, defending monogenism and the unity of humanity. Nott’s rejection of biblical authority, particularly his claim that Genesis only accounted for local populations, drew criticism from Christian fundamentalists, who viewed polygenism as heretical. Despite this, Nott maintained that his theories were compatible with a Christian worldview, framing races as divinely created for specific regions.
Beyond his racial theories, Nott made significant contributions to medical science. His research on yellow fever, including a 1848 paper suggesting an insect or microbial origin, was groundbreaking, predating modern germ theory. He also played a key role in professionalizing medicine in Mobile, advocating for rigorous training and standards. During the Civil War, Nott served as a Confederate surgeon, but the loss of two sons—one at Gettysburg—deepened his disillusionment with the South’s transformation.
After the war, unable to reconcile with a post-slavery South he derisively called “Negroland,” Nott relocated to New York City. There, he rebuilt his medical practice, joined E. George Squier’s Anthropological Institute, and continued his ethnological work. He later returned to Mobile, where he died on March 31, 1873, his 69th birthday. Nott’s legacy is deeply polarized. His medical contributions, particularly in Mobile, improved healthcare standards and saved lives. However, his racial theories, rooted in polygenism, provided pseudoscientific justification for slavery and entrenched racist ideologies that persisted beyond his lifetime. While Charles Darwin’s On the Origin of Species (1859) and The Descent of Man (1871) undermined polygenism by establishing monogenism and common descent, Nott never fully abandoned his views on racial inequality, though he conceded Darwin’s arguments on human origins.
Critics, including modern scholars, highlight how Nott’s work exemplifies the entanglement of science and social prejudice. His theories, though discredited, contributed to the enduring construct of race as a biological rather than social category, influencing attitudes well into the 20th century. As one descendant, quoted in a 2020 post on X, noted, Nott’s misuse of medical evidence to argue for racial inferiority was a profound abuse of science, yet its refutation underscores the resilience of those he sought to dehumanize.
Nott’s life reflects the complexities of his era—a time when scientific inquiry was often inseparable from the social and political biases of its practitioners. His story serves as a cautionary tale about the misuse of science to reinforce injustice, even as his medical achievements remind us of the potential for progress within flawed individuals.