Canongate Press,  , , , Lois McMaster Bujold 's Miles Vorkosigan series has its romantic and sexual moments, including interspecies sex. During the s and s, when Mitchison wrote Memoirs of a Spacewoman, several African colonies formed independent nations, and European radicalism was growing. Xenogenesis III, comes to understand that assimilation, for the human race, means annihilation of the entire planet as if it is obsolete. They went toe to toe with White feminists, defended themselves and the race, and did not hesitate to chastise the men who sought to keep them from doing so. Attachment of a graft is analogous to pregnancy in that it prevents ovulation, induces maternal feelings in females, slows Mary down and causes her to need extra food and drink, and makes her breasts swell slightly and the nipples darken. These intellectual tripods use their mental and technological superiority to treat humans as Europeans have treated animals and "inferior races" by massacring and eradicating Tasmanians and bison. Hazel Carby, who argues that structures of dominance form everyone as a racialised subject and that we should always recognise the normative category of Whiteness which forms and excludes racialised others, also emphasises cultural complexity rather than purity and calls for desegregation of apartheid systems of housing and education. Whether it be a depiction of a mother tenderly nursing an infant, or the physical detail of an extraterrestrial's organs or pseudopodia penetrating a woman to give reassurance or satisfaction, or of the delicious possibilities between "quite ordinary" young, pregnant women, Mitchison always places women's pleasure at the fore of her projections of the future. See, for example, Hazel Carby, Cultures in Babylon: In her historical novel The Corn King and the Spring Queen, published over thirty years earlier, Mitchison writes tenderly and with elaborate physical detail of one of her protagonists nursing an infant son, while descriptions of adult sex whether ritual, public sex, married sex or orgiastic, extra-marital sex are brief, symbolic or euphemistic. But while Stapledon's tale concentrates above all on the aspirations, loneliness and confusion of the male, part-savage, part-human dog, Mitchison brings the feelings of a woman, both as scientist and as nurturer, into sharp focus.