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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Pearl
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1992-09-02
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434b
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13 lines
A pearl is a shiny, hard, rounded abnormal
growth composed of nacre (or
mother-of-pearl), a chalky substance. Nacre
is secreted by many molluscs, and deposited
in thin layers on the inside of the shell
around a parasite, a grain of sand, or some
other irritant body. After several years of
the mantle (the layer of tissue between the
shell and the body mass) secreting this
nacre, a pearl is formed.
Subject by: Vince Pike