Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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close formation

The closeness of texture and FORMATION of a sheet of paper, i.e., a sheet in which the formation is uniform and free from a WILD (1) or porous appearance when viewed by transmitted light. It is frequently the sizing or loading agents that "close" the sheet by filling the interstices between fibers. A well-closed sheet has moreRATTLE and hardness, and generally greater opacity. (42 )

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