Sin autem ionicae erunt faciendae, symmetriae earum sic erunt constituendae, uti latitudo spirae quoqueversus sit columnae crassitudinis adiecta crassitudine quarta et octava.
But if the bases are to be Ionic, their proportions are to be so fixed that the breadth of the base each way is one and three-eighths of the thickness of a column.