| 250° Essay, Ge, 
the summits of the principal volcanoes, and of 
which the sides of the craters are chiefly com- 
posed. 
; The cave of Jingkla is situated near the 
South-west extremity of this Peninsula, in a 
ridge which is comparatively low, but termi- 
nates precipitously at che ocean and like the others 
appearing from above like irregular vaults pene- 
trating the si-es of the hill; these lead toa cav- 
ern less considerable thanthe others. In mauy 
other places which are here in view, the sides of 
the descending ridges are excavated to a con- 
siderable depth, where they are in contact with 
the Ocean. Near the shore I found detached 
“fragments of calcareous spar and of H rnstone: 
mixed with the disintegrated parts of the pou- 
dinzues. Descending the most western ridge 
of this Peninsula, | passed an extensive tract 
covered with rocks of limestone; they are high- 
ly irregular on the surface, and deeply furrowed - 
or excavated; in many parts large rugged rocks 
impede the road, and occupy a considerable range 
at the foot of the hill in contact with the Ocean. 
In my return from the west rn declivities of this- 
ridge I took a different route, and observed at 
intervals piles of limestone, poudingues entire 
or in a state of disintegrtion, fixed and rolled — 
basaltic rocks, particularly in the basins of the — 
fivers, and extensive beds of stones deposited 
from water. : 
The further remarks on the ridges which 
compose the Peninsula of Karang-bollong I shall - 
suspend, till the other hills which have a similar 
constitution in the western portion of the Island, d, 
d» Exp. Cat. No. 12 and M. 
