...Indeed the filtration of Negro blood noticeable inmodern Boers accounts for much curious history...
W.E.B. Du Bois 「The Negro」
...Is the colouring matter separated from its greenish gum and impuritiesby solution in alcohol, filtration and precipitation, by which itacquires a powdery texture, rendering it miscible in oil, &c...
George Field 「Field's Chromatography」
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jauntily tatterdemalion swede
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