 There is a discussion of what appears to be more or less the same phenomena in Du Bois’s book Dusk of Dawn, published in 1940, two years after Du Bois turned seventy. Indeed, since Dusk of Dawn is more nearly autobiographical in design than Souls—its subtitle is An Essay Toward an Autobiography of a Race Concept—it’s not surprising that Du Bois writes more expansively there of the experience of living in conditions of segregation and white supremacy, even though he doesn’t use the term employed in Souls. But also, by this time, his conception of race itself has opened up even further beyond that of any linear historical development. As he writes at the end of the central chapter of that book, “The Concept of Race”, 