üâ
E ’ ^ 3
rmii i iiK' 7 ": |i I, ■ t —5' «r ■ ' Ii I "
r- ÎII 'lUii:i( ll nn if .
xifî'iiîi ‘ I 1 l i i l - ■ %
iil|), }.1. I
!■- ’p : a i ; t : Ü l l f
"“■■ i ■ P 1 s ilsection
given (page 298). In this section
it is not attempted to preserve the form of
the outline, or the relative distances.
The position of the Pu y d e Cruelle, composed
of tuffa resting upon the fresh-water
limestone, is represented by the lowest
mountain on tlie right. Gergovia, composed
of tuffa and basalt, is represented by
the mountain next to it (D). The structure
and position of many of the mountains
round Clermont, viz. Cotes, Chanturges,
&c. are precisely similar to this. The second
mountain, marked D, represents nearly the
position of Montadoux; and the third,
marked D, the Puy de Charrade; but in the
latter mountain part of the basalt appears to
rest upon granite. The mountain E, formed
of trachyte, represents the position o f the
Puy de Dome, and the other mountains
composed of trachyte. Two volcanic mountains
are seen behind, F F. The first may
represent the Puy de Gravenire, the second
the Puy de Vache or the Puy de Pariou,
and the other volcanoes of this district,
from which currents o f lava descend into
the valleys.
From the Pay de Cruelle there is a very
extensive view of the mountains round
VOL. II. z