One of the mysteries of the English language finally explained.
A hard nutlike gall that forms on the some varieties of oak in response to the developing larva of a gall wasp. It is used as a source of gallic acid and tannin.
- ‘The best Aleppo galls, collected in Asiatic Turkey, principally in the province of Aleppo, are collected before the insects escape.’
- ‘In that year, more than 550,000 pounds of Aleppo galls were imported from Turkey.’
- ‘The main constituents of Aleppo galls are 50 to 70 per cent of gallotannic acid, 2 to 4 per cent of gallic acid, mucilage, sugar, resin and an insoluble matter called lignin.’
- ‘The Aleppo gall has been used since the time of the Greeks as a nonfading ink.’
- ‘Oak galls, primarily Aleppo galls or Mecca Galls imported from Turkey contain 50 to 70% gallotannic acid and were a major source of gallic and tannic acid used in tanning and dyeing.’
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