For the years I8961905-this was 1,010,000 tons, including both rock- and sea-salt.
The salt-marshes of the Mediterranean coast, especially the Etang de Berre and those of LoireInfrieure, are the principal sources of sea-salt.
The process of natural evaporation in the salines or salt gardens of the margin of warm seas made the composition of sea-salt familiar at a very early time, and.
The elements in addition to oxygen which exist in largest amount in sea salt are chlorine, bromine, sulphur, potassium, sodium, calcium and magnesium.
The consideration of this important substance falls under two heads, relating respectively to sea salt or " bay " salt and " rock " salt or mineral salt.