Byzantine and Romanesque architecture . 468 and 472, while Rivoira thinks the inner partis Roman, and the outer the work of Pope Simplicius,when he converted the building into a church. It is a circular building of large dimensions, andoriginally consisted of two concentric aisles round acentral area. The inner ring of columns has graniteshafts with Ionic capitals carrying a circular horizontalarchitrave, on which an inner drum rests. The capitalsof the next ring are all surmounted by the pulvino andcarry arches instead of lintels. On two sides five archesof this arcade are raised higher than


Byzantine and Romanesque architecture . 468 and 472, while Rivoira thinks the inner partis Roman, and the outer the work of Pope Simplicius,when he converted the building into a church. It is a circular building of large dimensions, andoriginally consisted of two concentric aisles round acentral area. The inner ring of columns has graniteshafts with Ionic capitals carrying a circular horizontalarchitrave, on which an inner drum rests. The capitalsof the next ring are all surmounted by the pulvino andcarry arches instead of lintels. On two sides five archesof this arcade are raised higher than the rest and their four 192 ROME [CH. XIII s. stefano columns havc Corinthian capitals. The other capitalsare of a rude Ionic type, clearly not antiques but work ofthe 4th or 5th century. With this ring the building nowstops, for the third ring, the original outer wall, has beendestroyed and with it of course the second or outercircular aisle ; and the intervals of the second ring ofcolumns were walled up to enclose the church by Pope. S-STEFANOROTONDOROME- frovn ])^Adincowh Fig. 41. Nicholas V in 1450, thus reducing the interior to itspresent dimensions (Fig. 41). It is obvious from the slender construction of theinner ring, consisting of single columns instead of thedouble columns of S. Costanza, that no dome could havebeen intended over the central area, which must eitherhave been left open to the sky, as was the case in theround church of S. Benigne at Dijon in 1002, or else been Plate XL VI


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Keywords: ., bookauthorjacksont, bookcentury1900, bookdecade1910, bookyear1913