Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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karaya gum

A gum derived from the dried exudation of the Indian tree Sterculia urens. In the deacetylated form, it is used as a fiber deflocculating agent for the long-fibered paper pulps. Karaya gum is also used as an economical substitute for GUM TRAGACANTH , as the size for marbling water. It is also known as "Indian tragacanth," and colloquially as "gum hog." (17 , 233 , 339 )

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