Julian Herman Lewis

After his graduation from Rush, Lewis was appointed to the University of Chicago's department of pathology.[1] In 1920 he was hired as a pathologist at the African-American Provident Hospital, where he eventually became chief pathologist.[3][5] During his early years at Chicago, Lewis worked closely with H. Gideon Wells and Ludvig Hektoen. Wells served as a mentor and advocate throughout Lewis's career, and Hektoen's research on blood groups informed Lewis's studies of medicine and race.[3]

Hektoen had previously published statistics on ABO blood types, but had not noted the race of his subjects, who were all white. In 1922, Lewis published a paper on the frequency of ABO blood types in African-Americans in the Journal of the American Medical Association. Lewis noted that the distribution of blood types differed between white and black people and that it was inaccurate to define what was "normal" based only on white subjects. This would become a major theme of his research.[3]

In the same year that Lewis's paper was published, he became an associate professor of pathology at Chicago.[3] The first African-American to hold such a position at the university,[6][7] Lewis served in this role until 1943.[2][3] The Sprague Institute awarded him a grant in 1922 to research "pathology among Negroes in all countries",[4] and in 1926, he earned a Guggenheim Fellowship for immunology studies at the University of Basel.[1][5]

Front page of The Biology of the Negro, 1942

In 1942, Lewis published the culmination of the work he had begun 20 years ago: a 400-page volume titled The Biology of the Negro, drawing on medical and anthropological studies from more than 1,300 different researchers. The book—"nothing more than an arranged assembly of the observed and reported facts concerning the biology, including the pathology, of the Negro", as Lewis described it—provided an extensive overview of the literature on racial differences, spending, for example, 35 pages on a discussion of black skin.[3][8] It was divided into nine chapters, the first three of which covered demographic factors, anatomy, and physiology and biochemistry. The remaining six focused on racial differences in the presentation of various classes of diseases. Special attention was given to sickle cell anemia, which Lewis argued was a disease exclusive to the black population.[9][10]

While Lewis stated that "many of the biological and environmental characteristics of the two peoples...show sharp contrasts",[11] he criticized the use of biological differences to justify belief in the inferiority of blacks to whites.[3] He argued that many physiological differences were advantageous, noting the comparative resistance of blacks to malaria and how it facilitated the building of the Panama Canal by West Indian laborers,[9] and dismissed research on racial differences in mental illness as "in keeping with the conventional vaudeville stage conception of the Negro".[3] A 1942 review in the Journal of the National Medical Association stated " [i]t is noteworthy that the author failed to discover any fundamental evidence to show that the Negro is biologically inferior to other groups".[2][11]

Some, however, considered Lewis's focus on the biological aspects of race to be regressive.[3] A review by William Montague Cobb in The Crisis, the official magazine of the NAACP, praised the book as "a significant contribution to the long recognized need for a scientific reference volume on constitutional studies of the Negro", but noted that it did little to challenge the contemporary medical literature and in its discussion of sickle cell anemia "approache[d] dangerously the reductio ad absurdum which even the Negro himself denounces in respect to so-called tests of Negro blood".[9] Lewis's position on sickle cell disease was later characterized by Keith Wailoo as "an endorsement and legitimation of cherished racial categories through blood analysis".[10]^: 148

The book, although it received mostly positive reviews, sold less than 500 copies in 1942 and was not reprinted. Lewis's biological approach to the study of race gradually fell out of favor in the academic community.[3]

H. Gideon Wells died in 1943. Lewis's academic work suffered: after that year he never published a research paper again, and he was put on leave from the university in 1944. The next year, he asked the Sprague Institute to fund the establishment of a laboratory dedicated to the study of racial differences at the Provident Hospital. The Institute agreed to finance the project, but the plans never materialized; the death of Lewis's wife that year may have played a role. During the later years of his career, Lewis took up various positions at local hospitals, eventually leaving Provident in 1952.[3] He served as the director of pathology at Our Lady of Mercy Hospital in Dyer, Indiana until just before his death.[2] Lewis died on March 6, 1989.[1]