Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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ground substance

An amorphous background material in which the cells and fibers of collagen are embedded. It is a colloidal substance in the form of a gel, and has the capacity of binding varying amounts of water. The hound water serves as a medium for the diffusion of gases and metabolic substances from the blood vessels to the cells of the tissues. and vice versa, of the living animal. A certain amount of ground substance is removed during the leather manufacturing process. (26 , 291 )

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