�y��vlog

It retracted deep into the earth after the eruption, leaving a chimney in the older, harder trachytic rock.

Rivers.—The greater part of Hungary is well provided with both rivers and springs, but some trachytic and limestone mountainous districts show a marked deficiency in this respect.

What is the description of the rock formation, trachytic, granitic, or gneiss, or are slate or sandstone the characteristic formations?

This warm spring, with a temperature of 113� Fahr., which even at its source forms a tolerable-sized brook, issues with much spluttering from a trachytic rock close by the way-side, and rushes, brawling and foaming, down a narrow defile, overgrown with splendid tree-ferns, and which is crossed by means of a slight rustic bridge.

The whole history of the activity of this volcano may be compared to the explosions of a vapour cauldron in the interior of the earth, which has been heated by the masses of old trachytic lava currents in an incandescent state, but not yet thoroughly cooled, whose eruptions formed the principal means of erecting the volcanic cone.