+ARCHAIC PERIOD.+ The archaic period is characterized by the exclusive use of the Doric order, which appears in the earliest monuments complete in all its parts, but heavy in its proportions and coarse in its execution. The oldest known temples of this period are the +Apollo Temple+ at Corinth (650 B.C.?), and the +Northern Temple+ on the acropolis at +Selinus+ in Sicily (cir. 610-590 B.C.). They are both of a coarse limestone covered with stucco. The columns are low and massive (4⅓ to 4⅔ diameters in height), widely spaced, and carry a very high entablature. The triglyphs still appear around the cella wall under the pteroma ceiling, an illogical detail destined to disappear in later buildings. Other temples at Selinus date from the middle or latter part of the sixth century; they have higher columns and finer profiles than those just mentioned. The great +Temple of Zeus+ at +Selinus+ was the earliest of five colossal Greek temples of very nearly identical dimensions; it measured 360 feet by 167 feet in plan, but was never completed. During the second half of the sixth century important Doric temples were built at Pæstum in South Italy, and Agrigentum in Sicily; the somewhat primitive temple at Assos in Asia Minor, with uncouth carvings of centaurs and monsters on its architrave, belongs to this same period. The +Temple of Zeus+ at +Agrigentum+ (Fig. 33) is another singular and exceptional design, and was the second of the five colossal temples mentioned above. The pteroma was entirely enclosed by walls with engaged columns showing externally, and was of extraordinary width. The walls of the narrow cella were interrupted by heavy piers supporting atlantes, or applied statues under the ceiling. There seem to have been windows between these figures, but it is not clear whence they borrowed their light, unless it was admitted by the omission of the metopes between the external triglyphs. [Illustration: FIG. 33.--TEMPLE OF ZEUS. AGRIGENTUM.]