In the various colours and dyes we have all phases, and the monogenetic shades almost imperceptibly into the polygenetic. [Please select]
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In the case of the polygenetic class, the idea is necessarily twofold. [Please select]
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Adjective colours, fixing themselves only in conjunction with a mordant or mordants on animal or vegetable fibres, and including all the polygenetic colours. [Please select]
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