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 it was believed that the competition of Gallic dyers might have ruined the Oriental, and would have done so, had the tenacity of their vegetable colouring equalled its beauty. In another passage Pliny tells us that these Gallic stuffs were used especially by the slaves and the populace.

The wool industry made no less progress in Gaul than weaving and dyeing. From numerous passages in Juvenal and Martial it appears that the woollen clothing worn by the populace of Rome in the second century was woven in Gaul, particularly in the districts to-day known as Arras, Langres, Saintonge. Pliny attributes to the Gauls the invention of a wool, that, soaked in acid, became incombustible, and was used to make mattresses.

Glass-making was another art carried from the East across the Mediterranean into Gaul. Still another industry, metallurgy, after weaving, contributed greatly to enrich Gaul. Undoubtedly even before the Roman conquest, Gaul worked gold mines; it seems, however, that silver mines remained untouched until about the time of Augustus. At any rate, the discovery of some deposits of gold and silver then gave a spur to several flourishing industries; jewelry-making, and--an original Gallic industry of much importance--