274 Essay, @c. 
others it is bare and appears on the surface ; its 
constitution agrees with that above described, 
composing a steep hill South of Ajibarang on 
the banks of the river Tiajum, but it is dis- 
posed in layers which have a gentle inclination 
and apparently penetrate far into the body of 
the hill. Externally of these layers the various 
substances which form the base of the surround- 
ing tract, are irregularly mixed together: among 
these were likewise fragments of volcanic Tufa, 
whick I soon met in extensive piles. Some of 
this was coloured by ion (vide Sp. No. 49)- 
The most rem.rkable rocky substances entering 
into the compos tion of this part of che Pawinian 
* hill were; 1: a sand-stone separating into rhon- 
boidal and trapezoiial fragments, with angles 
mostly defined ; some portions are lamellar and. 
penetrated: by and ochreuus efflorescence; 2, a. 
massive precipitation in which ro regular form 
could be observed, consisting of clay, and sepa-_ 
racing like coagula of that earth, when dry, into 
various amorphous particles. “The colour was 
grey of a blackish hue, and. it adhered slightly: 
to the tongue. 
\ At the Western extremity of the mount Pa: 
towards the eminence of Paggar-pella: the: 
surface is uneven, and occasionally exposes the 
continuation of the strata which abound in the 
whole tract. The principal village of this: 
neighbourhood, is also distinguished by the 
mame of Pagger-pella and situated near the top: 
= this eminence; the ascent, from the South, is 
with numerous tabular e iege Ba- 
a 8 Exp. Cat. No. 48, 
