Before revision: The latter, being made of dolomite fired with tar, is basic , whereas the Bessemer lining, made of packed sand, is acidic .
After revision: ()(MgO giving anions)( accepting anions) according to the Lux-Flood theory of molten oxidesThe latter, being made of dolomite fired with tar, is basic , whereas the Bessemer lining, made of packed sand, is acidic .