Drawings 168-175 as a group show the next stage of progression in the design process. The cap, consisting of a pendentive dome with segmental pediments on four sides and surmounted by a pine-cone finial, replaces the four-sided triangular pediment, which has now been completely abandoned. All of the drawings show the use of this pendentive dome cap with either a roundel or an ornate wreath relief in the segmental arches: drawing 168 as a detail and the later drawings as part of the whole or part-scheme. The finial ornament of the cap could be a pine-cone and perhaps taken by Soane from the thyrsus, a wand tipped with a pine-cone and an attribute of Bacchus. Soane had earlier used the thyrsus motif for ceilings and chimney-pieces in his designs for dining rooms.