In the close hot climate of Olympia the need of a good supply of drinking water is especially felt. For months together rain hardly falls; between May and October a shower is a rarity. The great festival was always held in summer (July or August), when the weather at Olympia is cloudless and the heat intense. Hence the multitudes who flocked to witness the games must have been much distressed by the dust and the burning sun, against which the spreading shade of the plane-trees in the sacred precinct could have afforded only an imperfect protection. Indeed Lucian, doubtless with a strong touch of exaggeration, speaks of the spectators packed together and dying in swarms of thirst and of distemper contracted from the excessive drought. The water of the Alpheus is not good to drink, for even in the height of summer it holds in solution a quantity of chalky matter. The water of the Cladeus, on the other hand, is drinkable in its normal state; but even a little rain swells it and makes it run turbid for a long time. Hence it was necessary to sink wells and to bring water from a distance. This was done even in Greek times. Nine wells, some square, some round, some lined with the usual shell-limestone, others with plaques of terra-cotta, have been found at Olympia; and water was brought in aqueducts from the upper valley of the Cladeus. But in Roman times the supply was immensely improved and extended by the munificence of the wealthy sophist Herodes Atticus. Lucian tells us how the mountebank Peregrinus denounced Herodes and his aqueduct for pandering to the luxury and effeminacy of the day. It was the duty of the spectators, he said, to endure their thirst, and if need be to die of it. This doctrine proved unacceptable to his hearers, and the preacher had to run for his life pursued by a volley of stones.