The Devolutionist and the Emancipatrix

Two interplanetary romances: a scientist's mind is projected into a body on a distant world where the ruling class has bred the workers into something less than human, and a second world where the women rule and the men are kept. Flint left school at fourteen and sold these to All-Story in the 1910s, before Gernsback had named the genre; he died at thirty-six under strange circumstances, at the bottom of a canyon in a stolen car.