rules of each order relaxed, but we find the two orders more freely combined "within one building, for example in the superimposed
storeys of a portico (stoa), or even elements of the one grafted on to the other to form a kind of hybrid order. In Doric there was a
tendency for columns to become slimmer and more widely spaced, with three or four metopes and triglyphs per intercolumniation in
place of the 'canonical' two. The lighter, more spacious effect was more in harmony with the aesthetic of Hellenistic times, which
found traditional Doric too severe and heavy. At the same time the Doric triglyph frieze could be inserted in an Ionic order, as in the
Sanctuary of Athena at Pergamum, and conversely the dentils of Ionic could be combined with Doric columns and entablature, as in
the north stoa of the agora at Priene. A certain amount of mixing had taken place especially in the western colonies as early as the
Archaic period, but the thoroughgoing hybridization of Hellenistic times betokens a new attitude in which the traditional orders lost
much of their independence and became a common repertory of ornament to be dipped into almost at will.
Portico Of The Sanctuary Of Athena At Pergamum, built by Eumenes II (197-159BC). Characteristic of the Hellenistic age are the
combination of a Doric colonnade in the lower storey with an Ionic in the upper, and the relaxation of the rules governing the syntax
of the orders (including the insertion of a Doric frieze within an Ionic entablature).