marbling size
The gelatinous liquid upon which the marbling
colors are dropped and formed into patterns. GUM TRAGACANTH over
the years has been the most frequently and
successfully used marbling size gum, but other
gums and substances have also been used with
varying degrees of success, including CARRAGHEEN MOSS ,IRISH MOSS , FLEA SEED , and even
LINSEED OIL . The
last, however, was very seldom used because,
although it is easier and more economical to
prepare, it deteriorates quickly. Flea seed is
stronger and lasts longer but it is of little use
in the nonpareil and other combed patterns because
the colors are dragged off by the comb. Carragheen
moss, which was first used sometime after the
middle of the 19th century, is still popular;
however. it quickly decomposes unless a
preservative such as sodium sulfate. glycerin and
water, or formalin is added. (217 , 264 )
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