Etymology and history of the word โgasโ
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Article
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1910
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Elsevier Science
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English
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## 4~3 DYEING UF \\O()L.--The authur agrees with tim theory that wool contains amino, imino, and carboxyl groups, as only by this constitution can it be explained why wool mordanted with tin tannate loses its affinity for acid dyestuffs. This loss of affinity also occurs when hydroxyl and carbonyl