Galton Mr on hereditary genius 28 gregariousness and independence in animals 104 en the struggle between the social and personal impulses 125 on the effects of natural selection on civilised nations 133 on the sterility of sole daughters 135 on the degree of fertility of people of genius 136 on the early marriages of the poor 138 on the ancient Greeks 140 on the Middle Ages 141 on the progress of the United States 142 on South African notions of beauty 579 Gammarus use of the chelae of 268
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