780 MINERALOGICAIj description of the island of banka, 
the rest, and finally runs off to the extremity of the island, forming the 
different points and promontories which have been noted on the map. 
In the east several low rounded hills intervene between the Mannm- 
bing and the Kukus, which from its pyramidal form has probably 
obtained this name by the natives, as it resembles the pointed basket 
commonly used in boiling rice. From the central mountain and from 
appendages low ranges descend in every direction : the constitution 
ot those which I examined in the environs of Minto will he des¬ 
cribed after some remarks on the large mountain. The foot of the 
bill Kukus stretches eastward to unite with the long range of low 
hills which pervades the central parts of the Island, 
After remarking the constitution of many of the less considerable 
hills of the island, in the vicinity of the mines, I was anxious, on 
my return to Minto, to examine the Manumbing, whose promonto¬ 
ries I had already observed near the mines of Rangam, as well as 
different ranges of rocks which descend from its declivities to the 
sea. In ascending this mountain the natives follow two different 
roads ; one takes a direction through the settlement of Darat-lama, 
and leads towards the Dulang-pitsha *, the other strikes off to the 
eastward and approaches the hill Kukus,—I followed the latter. 
Beyond the new establishment at Minto the ascent is very gradual: 
about 2 miles from the shore I observed granite rocks on the sur- 
face : they are first dispersed singly; but their number increases on 
approaching the mountain. I noticed several of very large size and 
regular tabular sides, rising perpendicularly above 30 feet: many 
are low and rounded on the surface. In the component parts they 
resemble the granite found in other parts of the Island ; the felspar 
enters in very large proportion and the miea is very sparingly dis¬ 
tributed. Some masses contain large quantities of schorl in small 
lamina! or crystals collected together in irregular groups. 
The road leads to the junction of the large mountain with its 
eastern appendage : I observed the gunong Kukus and the rounded 
hill above mentioned in various spots covered with large separate 
rocks. In the river Sungie Pait, which rises from the acclivities of 
the mountain, I observed a number of siliceous fragments ; these 
were portions of decomposed granite rocks, and resembled the sili¬ 
ceous stones usually found at the aqueducts of the mines. Many of 
the granite rocks of this tract are very loose in their texture, and 
component parts readily separate on the application of a small 
force. Beyond the river Sungie Pait the ascent becomes more con- 
