Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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1. The drying and solidification of an adhesive to the point where it exhibits fissures and stress cracks under conditions of low impact. Embrittlement may also be a condition resulting from the migration of the adhesive plasticizer into the adherend, or the solidification and stratification of a cast adhesive coating due to exposure to atmospheric conditions. 2. A loss of flexibility, primarily in paper. See:BRITTLENESS . (222 )

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