moldings converge in perspective recession upon it above the groins of the apse radiate from it the ribshafts which receive them and descend to the floor below returnthe eye inevitably to it ti is the single part of a gothic space in which definiteness is certified tn any other place for any part which the eye may reach there is always an indefinite beyond which remains to be explored here is none the altar-table is the common center in which all movement comes voluntarily to rest