ANt> GEOLOGY OF THE MALAY' PENINSULA. 
95 
panied by sandstone and clays, and the latter rocks probably gain up¬ 
on it in bulk as its southern boundary is approached. 
Last year indications of coal were found on the coast to the south 
of Junk-ceylon, and a partial examination on different occasions dur¬ 
ing the year resulted in the discovery of coal at Tama, T&njong 
Bombong and T. Patong, of which the most northerly is in lat. 8^ N„ 
and the most southerly in 7° 37* N.* Traces were also observed 
about one degree farther south. It has not yet been found in layers 
sufficiently thick and pure to be wrought, being generally lapidified 
or pyritous. But, where pure, it is a highly bituminous jet, and su¬ 
perior to the products of the Indian coal fields. The existence of 
coal in the calcareous division of the Peninsula serves to shew that 
its geological features were analogous to, or identical with, those of 
the Isthmus of Kra, before the era of the plutonic elevation of the 
zone. 
We believe that the limestone has not been observed further south 
In the Peninsula than the Bunting Islands, which lie a few leagues to 
the north of Pinang- Opposite Pinang, and for some distance to the 
northward, sandstone appears to be the principal aqueous rock- It 
is associated with clays and shales. A similar formation probably ex¬ 
isted and is still partially preserved, in Perak, but we have no account 
of the sedimentary rocks of that country, nor of the northern part of 
the next kingdom , Salangor. Of the southern part of Salangor and of 
Johore generally we can speak more positively from personal obser¬ 
vations. The predominating sedimentary rocks in the last two de¬ 
grees of the Peninsula are argillo-micaceous and argillaceous schists, 
with which sandstones and common clays and shales of various colours 
are associated. The sandstones and common clays and shales in some 
places predominate, as in Singapore, and some of the middle parts of 
Johore. The same rocks are found in the northern islands of the 
Johore Archipelago, but we are without any actual observations of 
the larger portion of this Archipelago. In Banka the prevailing stra¬ 
tified rocks are clays and sandstones. 
* Journ. Ind. Arch. &z. vol. i. p. p. 145, 151, S53*. > 
