$90 ; Essay, Kc. 
| 
-semblage exhibits an appearance not unlike the 
ocean in a violent state of agitation. The north- 
ern hills appear to form a connected ridge, 
stretching along the horizon, from the foot of 
the mountain of Ungarang towards the decli- 
vities of the mountain Prow. Their constitu- 
tion is already explained by the description of 
the various central ranges on the preceding 
route; they are composed of the same mate- 
rials; basaltes abounds in all, bearing uniform- 
ly strong marks of attricion, as well in those 
fragments which remain on the declivities, as in 
those that have been carricd down to the vallies 
and to the basins of the rivers and rivulets. In 
the vicinity of the Sundoro and Sumbing large 
fixed rocks project from the soil, and the derach- 
Ced fragments are very numerous; towards the 
eastern volcanoes the territory is covered, more 
- deeply, by a reddish soil, and the basaltes in 
many cases exposed by sections of the hills, 
-*indicates an incipient decomposi ion. Here 
"some large rocks of this substance were also 
"found, composed of particles which separated in- 
to tables or slabs on the application of external | 
force: they were often marked on the tae! 
; with parallel transverse lines. 
princi ipal river 4 pervading iie territory, 
the Progo o, arises from the norhern declivites 
of the Sindorts aud, after receiving numerous 
branches from this mountain, che Sumbing, and 
-the declivites of the mountain Ungarang, flows 
in a nearly direct southern "course towards the 
f its eastern bran- 
