"*w 
C'««- 
i*' i 
Basaltic colomnj. 
195 
not '* basaltic group of Monte 
Qf liighly curious in itself, but interesting on 
1 'cs in ''*® great light it throw* on the origin of 
jf'Msjji^^neneral. 
of 'ivr^ remarkable, that the columns, in the two 
(illl’^t'tiygj Jonte Rosso and Monte del Diavolo, preserve 
fdf^i WlL] ® ®3me position, nearly parallel to each 
Cj„'®'ilitin~u usually the case in basaltic groups. 
not usually tne case in basaltic groups 
Say P y principal aggregate of which the Giant’ 
.!'™6d, stands in a direction perpendicular to 
Kt detached groups of columns 
0®n eminence above, assuming by their 
til. tile I ^retlt deo^reps of nVlIInnltv A mnnrr 
g 
to 
degrees of obliquity. Among the nu- 
O^etia 'tills of Auvergne and Velay in France — 
'0 n... seem to abound in tho.se provinces more 
tlSsof,- - - 
'^.’% 1 ^'t'arlv 1 group lying in all possible directions, 
O ' No ® . ost as die prisms in a mass of common 
^ variety of position so observable in 
<ci, - '*inn. 
— * jAHi ». ui. aiiu, ui luc 
■uothing is more common than to see the 
% ^ ativ aoounQ 111 tno.se provinces more 
globe^'^'^'i .I’®'*- °f Europe, and, perhaps, of the 
H '"''‘ttUlns ~ '““'•V ou uuDcivauiK m 
'IrtiJioftBo^ tis in whole masses or ranges of them. 
^iiiy tent gj ^ttiit themselves on die same hill, disposed 
Scr ^ ®'tiges, as it were, one above the other, 
WJ. *0ho ‘iSSlimincr nnri otr/an 
•St), ' in g columns of the Monte del Diavolo are 
'tf the uf volcanic sand, by which, in many 
. ^lll. tlifAir ov:,. — j . u-ui» 
'u. they are entirely covered : it is probable, 
' on a base of basaltic 
r^Cf diem ‘1 weic, one auove me oiner, 
J?, ttssuming very different, and even opposite 
in - , columns of the Monte del Diavolo are 
’ 3 kii 
. 
i'(»vi5 3 simq repose beneadi — „ ........... 
™ of ’tature. Nodiing is more common, in the 
\rj Baltic 1 above mentioned, than to see insu- 
'^uliim ” tilmost exclusively composed of different 
jj^ 'W ojp tis, which present themselves in stages, one 
’’esetny^ widiout any other stratum between 
I a K*'® some measure, if the comparison can 
% Vp dingj dge pile or stack of cleft wood. Although 
At Itno'n,,'^^'^"' nation Monte Rosso is the only 
or described, in a mass of granite, stit 
*^quali "^“'ornns have elsewhere been met with, 
diey a heterogeneous substance or texture, 
' ^ ^ell a ^ otherwise differ from diose of Monte 
* ffoni the common basalts. 
1L» 
