Etna : a history of the mountain and of its eruptions . SLAN D OF COLUMN. J. LE ITCH & C< BASALT OFF TREZZA 8C0GLI DI CIGLOPI. 75 limits, but we derive this information from othersources. No true estimate can be obtained from theobservation of the decomposition of lavas, for it hasbeen often observed that two lavas will decompose atvery different rates. A little to the north of the village of La Scaletta,at the base of the rocks upon which Aci Heale stands,there are two small caverns in the abrupt face ofthe basalt, which can only be approached in a consist of columnar basalt bent
Etna : a history of the mountain and of its eruptions . SLAN D OF COLUMN. J. LE ITCH & C< BASALT OFF TREZZA 8C0GLI DI CIGLOPI. 75 limits, but we derive this information from othersources. No true estimate can be obtained from theobservation of the decomposition of lavas, for it hasbeen often observed that two lavas will decompose atvery different rates. A little to the north of the village of La Scaletta,at the base of the rocks upon which Aci Heale stands,there are two small caverns in the abrupt face ofthe basalt, which can only be approached in a consist of columnar basalt bent very curiously, andcapped by amorphous basalt. A drive of a few miles to the South of Aci Eealebrings us to Trezza, a small village built of lava. Ashort distance from the shore are the celebrated Scoglidi Ciclopi, or rocks of the Cyclops, said to be thosewhich Polyphemus hurled at Ulysses after his escapefrom the cave. The rocks, seven in number, formsmall islets, the largest of which, the Isola d Aci, isabout 3000 feet in circumference, and 150 feet cons
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Keywords: ., bookauthor, bookcentury1800, bookdecade1870, booksubjectvolcanoes
