+THE TRANSITION.+ During the transitional period there was a marked improvement in the proportions, detail, and workmanship of the temples. The cella was made broader, the columns more slender, the entablature lighter. The triglyphs disappeared from the cella wall, and sculpture of a higher order enhanced the architectural effect. The profiles of the mouldings and especially of the capitals became more subtle and refined in their curves, while the development of the Ionic order in important monuments in Asia Minor was preparing the way for the splendors of the Periclean age. Three temples especially deserve notice: the +Athena Temple+ on the island of +Ægina+, the +Temple of Zeus+ at +Olympia+, and the so-called +Theseum+--perhaps a temple of Heracles--in Athens. They belong to the period 470-450 B.C.; they are all hexastyle and peripteral, and without triglyphs on the cella wall. Of the three the second in the list is interesting as the scene of those rites which preceded and accompanied the Panhellenic Olympian games, and as the central feature of the Altis, the most complete temple-group and enclosure among all Greek remains. It was built of a coarse conglomerate, finished with fine stucco, and embellished with sculpture by the greatest masters of the time. The adjacent +Heraion+ (temple of Hera) was a highly venerated and ancient shrine, originally built with wooden columns which, according to Pausanias, were replaced one by one, as they decayed, by stone columns. The truth of this statement is attested by the discovery of a singular variety of capitals among its ruins, corresponding to the various periods at which they were added. The Theseum is the most perfectly preserved of all Greek temples, and in the refinement of its forms is only surpassed by those of the Periclean age. [Illustration: FIG. 34.--RUINS OF THE PARTHENON.] [Illustration: FIG. 35.--PLAN OF ERECHTHEUM.] [Illustration: FIG. 36.--WEST END OF ERECHTHEUM, RESTORED.]