782 MI NERA LOGICAL DESCRIPTION OF THE ISLAND OF BANKA. 
of Kadur, Pait-duteng and Meng-gelam and probably stretches in a 
northern direction to the mines of the district of Palangas. 
This stratified tract is bounded by a range of hills which is alluvi¬ 
al in the south. I traced it from Belo to the extreme western point: 
I remarked however that the beds of Tin-ore extend at several 
points into the ocean, and that the primitive rocks pierce the alluvi¬ 
al hills in different places, so as to demonstrate very dearly their 
conjunction with the veins of Red-Iron-stone Breccia See. 
After these general reflexions I proceed to detail my observations 
on the southern ridges of the Manumbing. 
The village of Belo is situated at the western extremity of the 
low alluvial district which extends along the southern coast towards 
Kutto-w&ringin, and is hounded in the north hy that range of secon¬ 
dary hills which is laid down on the Map : various veins of seconda¬ 
ry rocks of Red-Iron-stone or sand stone &e., pass through it, to¬ 
wards the most prominent points as Tanjong Punie, Tanjong T&da, 
the island Sembubu&ng &c. (k formed this opinion from the colour 
and appearance of these rocks in passing near the shore in a boat, 
as circumstances at the time did not permit me to make an exami¬ 
nation.) 
In the vicinity of Belo I found numerous large blocks of Breccia, 
w liich were brought hither from the neighbouring rocks : these gave 
a striking indication of the peculiarity which this part of the island 
affords, in a greater proportion of Iron which enters their composi¬ 
tion. Their fracture exposes nodules of brown ochre comprised in 
a compact substance consisting of fragments of silex and Red-Iron¬ 
stone. 
The banks of the river of Belo are lined with a beautiful white 
sand which is also observed along the shore from here to the west¬ 
ern extremity, and is truly characteristic of the composition of the 
solid parts or the substances which form the basis of Banka. 
Between Belo and Penjalin Belo (the next rivulet pursuing the 
coast to the westward) a considerable plain is left at the foot of the 
lowest ridge or of the lowest gradation of the successive acclivities 
of the large mountain. It is covered with black mould and with 
sand accumulated by the rivulets from the neighbouring hills: vege- 
getation here is very luxuriant. At Penjalin Belo the hills descend 
to the sea side, they are also covered with a deep vegetable mould, 
which being removed one meets a yellow sand. In several points 
where the extremity of the lull is occasionally exposed to the action 
