Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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1. A term applied to the condition of materials containing water of absorption, crystallization, or imbibition. In papermaking, hydration refers to the chemical or mechanical (or both) treatment of paper fibers, other than cooking or bleaching, which takes place before sheet formation on the papermaking machine. It relates especially to altered sheet characteristics, including density, formation, opacity, and strength. 2. The paper pulp characteristics resulting from the above treatment. (17 , 42 , 276 )

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