Beat egg whites & cream of tarter in large bowl until stiff & set aside. Boil sugar, salt, syrup & water until it forms a hard bell when dropped in cold water. Add half of this boiling syrup to egg whites slowly, beating with mixer all the time. Place remaining syrup back on burner & boil another two minutes. Add this slowly to egg whites & add vanilla. Beat until it starts to set up, then add nuts & pour into greased pan.