...bbing or rasping. Decorticating was practiced by the Romans, the whole grain being pounded in mortars with some abradant which rasped off the cuticle or bran. Mills for decorticating are known in England as barley-mills, that grain being principally used as human food in the condition known as pearl barley. The barley-mill has a roughened exterior, and revolves in a wooden casing. The middle port...