MIN ERA LOGICAL DESCRIPTION OF THE ISLAND OF BANKA. 725 
fragments were very similar to those I had found at the aqueducts 
of the mines and which have been described at fragments of felspar. 
In this rivulet were also fragments of pure quartz and of that pecu¬ 
liar siliceous stone wdiich is intersected by lines of a compacter sub¬ 
stance. Continuing the track to Kutto-waringin I noticed on seve¬ 
ral elevations fixed veins of Red-Iron-stone; in one place in particu¬ 
lar, this substance was a blackish colour and uncommonly ponder¬ 
ous, displaying in the fracture a lustre almost metallic. Between 
many elevations, which are not considerable the whole country is 
low and occasionally inundated and before arriving at the stockade 
I passed above a mile through a tract which was completely overflow¬ 
ed. A belt of considerable extent of alluvial tract bounds the western 
shores of the Island from Tampelang to Penagtin, transmitting be¬ 
sides many others, the rivers of Kutto-waringin and Mendu. 
(To be continued) 
