96 Mineralogical Description of the Island of Banka. 



merits of sandstone, of the same color and constitution as that 

 found at the last mine above mentioned: upon examination I 

 found that they were brought from the foot of the hill Pari-pari, 

 where this stone is found in abundance. I obtained by means of 

 the natives several specimens from their natural situation. The 

 stockade of Sungie-bulu is built in the alluvial district, the con- 

 fines of which will more accurately be pointed out in future. 



In the northern division of the island of Banka the hills are 

 divided into two separate ranges, one near the western the other 

 inclining towards the eastern boundary, between which an ex- 

 tensive space remains which is occupied by the Bay of Klabbet. 



This bay has, upon the whole, the same direction as the gene- 



W.) to southeast (or 

 S.S.E.) it is terminated on the south by the mountain of Marass : 

 in the geographical account, the northern part of the island has 

 been divided into two peninsulas according to the division natu- 

 rally formed by this bay. 



The mineralogical appearances in the western range and its 

 environs having been described, I proceed to the detail of those 

 in the eastern. The rocks which project beyond the surface at 

 the shores of the bay, as well as those dispersed through the en- 

 tire western portion, are granite : I examined them in my course 

 through the bay at numerous points. The constitution of the 

 islands of Pulo-Klappa, near the points Tanjong-Ru and Tan- 



jong Mantung, which separate the outer from the inner bay, and 



which nearly meet each other from the west and from the east, is 

 of the same kind : they are both immense piles of granite rocks, 

 similar to those above described, on which vegetation has com- 

 menced. 



The gradual inclination or meeting of the declivities of both 

 ranges of hills towards the west from the eastern, and towards 

 the east from the western, is evident not only by the excavation 

 which is filled up by the bay, but also by the course and dis- 

 charge of the numerous rivers from both sides, and which have 

 been accurately enumerated in the geographical description of the 

 island. 



I had an opportunity only of examining the eastern confines 

 of the bay. Between the projecting points or promontories of 

 the hills, bounding the outlets of the rivers, there remains a con- 

 siderable alluvial tract: and the district of the mines, commences 

 towards the sides of the hills from the boundary of the bay. 



Beginning in the north near Tanjong Mantung, we meet the 

 outlet of the river of Panjie flowing into the inner bay, a small 

 branch (but which is considerably dilated by the influx of the 

 tide) takes a somewhat northern direction: on this the stockade 

 of Belinyu is built, at no great distance from the promontory 



