426 MINE RA LOGICAL DESCRIPTION OF THE ISLAND OF BANKA. 
abundance and size of the fragments of Red-Iron-stone and Poud- 
ingues shewed here, as at Towallam, that the miners had met with 
extensive veins of this stone. 
The next mine is situated two miles further north ; form the chief 
miner who administers the work it is called Hopsun. On the road 
to it, I passed extensive districts which had formerly been worked. 
Large fragments of Iron-stone and Poudingues were abundantly dis¬ 
persed over this tract: they were mostly detached and had been re¬ 
moved from their natural situation by the process of mining and by 
the formation of canals. The veins from which they were taken had in 
many instances run near the surface. In this mine I noticed the 
following strata : 
1. Soil. 
2. Sand bedded in clay of a grey colour. 
3. Black-clay. 
4. Coarse white sand. 
The stones at the aqueducts were fragments of the common sili¬ 
ceous kind, large and mostly of a white colour: very few breccias 
were mixed with them. 
In the next mine call Lakuntouw situated about half a mile east- 
north-east of the last mentioned, I found the strata. 
1. Soil. 
2. Sand bedded in whitish clay. 
3 . Sand in dark coloured clay. 
4. Sand in bands of variegated colours. 
5. Black-clay. 
6 . White sand. 
The stones at the aqueducts resembled those found at the last mine; 
they contained, comparatively few amygdaloids or breccias : those 
which occurred resembled those of the mine of Belinyu. They were 
ponderous; silicious particles appeared on the fracture alternating 
with portions of a metallic lustre, and the surface was ochreous. A 
few consisted of minute particles approaching the nature of sand¬ 
stone. 
The mineralogical appearances in the two districts last described 
