Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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1. An irregular formation of the fibers in a sheet of paper, resulting in a mottled appearance in the LOOK-THROUGH of the sheet, as opposed to a CLOSE FORMATION . It is caused by: 1) partial clotting or lumping of the fibers; and 2) high freeness or excessive vacuum at the first suction box of the papermaking machine. It is especially noticeable in long-fibered papers, although it is possible to imitate a wild formation in paper made up of short fibers by manipulating the sheet forming equipment. Also called "cloudy." 2. See: MARBLED GRAIN .

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