216 Dr. Cooper on Volcanoes 
es cube of Lava. Breisl. § 669 note. Suppose for the mo- 
figurate basalt, according to Soulaive in that district, beside 
amorphous basalt and cellular basalt, on the surface. ‘Ta- 
king in the depth, he calculates the basaltic matter at two 
thousand one hundred and eighty-seven millions of cubic 
feet French. 3 Soul. 358. 
Currents of Lava are often slow. Dolomieu cites one 
which ran but twelve thousand and five hundred feet in 
two years. M. de Buch however saw one descend from Ve- 
suvius, twenty three thousand feet in three hours and reach- 
smoked twenty-six years. S. W. Hamilton thrust a stick 
into a mass of Lava, two leagues from the opening in Vesu- 
vius, three years after it had been ejected, and the stick 
took fire. 
Among voleanic ejections are mud Lavas, (moia,) They 
are noticed by S. W. Hamilton and Spalanzani, both from 
‘Etna and Vesuvius. Menard de la George says they are 
regen in volcanoes near the sea. 
le earthquake at Lima in 1746, was accompanied (ac- 
cording to Uiloa) by a mud eruption from Monte de la Con- 
ception at Lucanas, which covered an immense space of 
ground. According to Humbold in 1698, the volcanoes 
of Carguarazo near Chimborazo, covered eighteen square 
leagues with mud. Such also are the eruptionsof Peru 
A 
mud voleanic mountain at Macalonba in Sicily, (Dolomieu-) 
