Show I 1 heat fleat retained Retz lIned in lava the dav lava a st streams pearlis from the ciup eruption tion of vestus lus in were so hot twelve years later that steam issued from thelt their cracks eraci cr and crevices those that flowed from etna E taa in ih 1787 were fount found to be steaming hot just below the tae crust as lq late as 1840 tile the volcano voll toll 1 jorullo corullo Jo rullo in ill mexico poured forth in 3 1759 lava IMM that eighty seven years later gave 13 ga c off columns of steaming steamier ste amir vapor in 1780 it was vas found that a stice thrust into the crevices in staily ignited althof although 1 h no DO discomfort was experienced in in walking ou on the hardened crusts crust |