The last of which we have any knowledge occurred in 1301, but the island was visited by earthquakes in 1881 and 1883, 1700 lives being lost in the latter year, when the town of Casamicciola on the nort of the island was almost entirely destroyed.
The potter's clay of Ischia served for the potteries of Cumae and Puteoli in ancient times, and was indeed in considerable demand until the catastrophe at Casamicciola in 1883.
Coast, the capital and the seat of a bishop (pop. in 1901, town, 2756; commune, 7012), with a 15th-century castle, to which Vittoria Colonna retired after the death of her husband in 1525; Casamicciola (pop. in 1901, town, 1085; commune, 3731) on the north, and Forio on the west coast (pop. in 1901, town, 3640; commune, 7197).
All this country was comprised in classical times under the title of the Phlegrean Fields, and was certainly then more actively volcanic than it now is, although the severe shock of earthquake which occurred in the island of Ischia in 1883 completely destroyed Casamicciola, and did serious damage to Forio, Lacco Ameno and Serrara Fontana, shows that there is great seismic activity in the locality.