The galls result from the plants reaction to irritation caused by the larvae of various insects which lay eggs in the cambium area of the plants.
Although galls were used extensively over a period of centuries in the manufacture of certain inks, and in the tanning of leather, they are little used today for tanning outside of the areas where they are collected, largely because of the expense involved in their collection. See also: IRON-GALL INK ; VEGETABLE TANNINS . (175 , 235 , 363 )
Timestamp: Saturday, 19-Nov-2011 13:18:41 PST
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