Ita uti autem in doricis triglyphorum et mutulorum est inventa ratio, item in ionicis denticulorum constitutio propriam in operibus habet rationem, et quemadmodum mutuli cantheriorum proiecturae ferunt imaginem, sic in ionicis denticuli ex proiecturis asserum habent imitationem.
In the Doric order, the detail of the triglyphs and mutules was invented with a purpose. Similarly in Ionic buildings, the placing of the dentils, has its appropriate intention. And just as in the Doric order the mutules have been the representation of the projecting principal rafters, so, in the case of Ionic dentils, they also imitate the projection of the ordinary rafters.
final_alignments\Vitruvius_Architecture_Book_4.json