The complete title of Darwin's most famous work, often abbreviated to The Origin of Species, was The Origin. of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life. As Koster notes about Darwin's view on race, he:
'never considered "the less civilized races" to be authentically human. For all his decent hatred of slavery, his writings reek with all kinds of contempt for "primitive" people. Racism was culturally conditioned into educated Victorians by such "scientific" parlor tricks as Morton's measuring of brainpans with BB shot to prove that Africans and Indians had small brains, and hence, had deficient minds and intellects. Meeting the simple Indians of Tierra del Fuego, Darwin wrote: "I could not have believed how wide was the difference between savage and civilized man; it is greater than between a wild and domesticated animal . . . Viewing such a man, one can hardly make oneself believe that they are fellow creatures and inhabitants of the same world."44
Darwin's belief that some races (such as blacks) were inferior to others became so widely accepted that, as Haller concluded: 'the subject of race inferiority was beyond critical reach in the late nineteenth century.45 Although Darwin opposed all forms of slavery, he did conclude that one of the strongest evidences for evolution was the existence of living 'primitive races' which he believed were evolutionarily between the 'civilized races of man' and the gorilla:
'At some future period, not very distant as measured by centuries, the civilized races of man will almost certainly exterminate, and replace, the savage races throughout the world. At the same time, the anthropomorphous apes. . . will no doubt be exterminated. The break between man and his nearest allies will then be wider, for it will intervene between man in a more civilized state, as we may hope, even than the Caucasian, and some ape as low as a baboon, instead of as now between the Negro or Australian and the gorilla. ... It has often been said ... that man can resist with impunity the greatest diversities of climate and other changes; but this is true only of the civilized races. Man in his wild condition seems to be in this respect almost as susceptible as his nearest allies, the anthropoid apes, which have never yet survived long, when removed from their native country.' 46
I see no mention of Irish or Scots there.