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Manufacture of glass

A third industry greatly affected by the Phoenicians was the manufacture of glass. According to Pliny, the first discovery of the substance was made upon the Phoenician coast by a body of sailors whom he no doubt regarded as Phoenicians. These persons had brought a cargo of natrum, which is the subcarbonate of soda, to the Eastern Mediterranean in the vicinity of Acre, and had gone ashore at the mouth of the river Belus to cook their dinner. Having lighted a fire upon the sand, they looked about for some stones to prop up their cooking utensils, but finding none, or none convenient for the purpose, they bethought themselves of utilising for the occasion some of the blocks of natrum with which their ship was laden. These were placed close to the fire, and the heat was sufficient to melt a portion of one of them, which, mixing with the siliceous sand at its base, produced a stream of glass. There is nothing impossible or even very improbable in this story.
 
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