Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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carragheen moss

A dark purple, branching cartilaginous seaweed (Chondrus crispus), found on the coasts of Northern Europe and North America. The moss is used in the preparation of MARBLING SIZE , about 4 ounces of the moss being sufficient to make 9 or 10 quarts of size. Carragheen moss was first used in making marbling size sometime after the middle of the 19th century. The extract of the moss is also used as a thickening agent and viscosity stabilizer in some adhesives. (217 , 237 , 335 )

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