= 
. 
Essay, Gc. 259 
The fracture resembles that of many of our Ba- 
saltes, but contains a greater admix'ure of 
Schorl. Some parts, in which Schorl equally 
abounds, are made up ofa white fine-grained 
sand.  Feldspar is comparatively rare. . East- 
ward of this hill to the village of Jittis above 
mentioned, the tract near the Ocean is but spar- 
ingly cultivated ; towards the North the whole 
is an inaccessible marsh, bounded by the central 
ranges; near the North East exremity of this, 
the village Piing-tutul is siwated, which has 
been mentioned in the Geographical description. 
After the examination of the Southern portion 
of the province of Banyumas, my attention was 
directed to those districts which are situated 
North and North- West from the capital: these 
occupy a considerable part of the declivities of 
the mountain of Tagal, one of the principal 
links in the volcanic series of this Island. . Hav- 
ing crossed the river of Serayu, and passed sev- 
eral eminences which are covered with a deep 
soil, I entered on a tract nearly level, having 
only a gradual ascent in the North ; it is compos- 
ed of the districts of Passir and Probolingo, 
being bounded in the East by Banjar, and in 
the North and West by several of the Honor- 
able Company's districts belonging to the resi- 
dencies of Tagal and Cheribon. 
 Suko-rojo, the situation: of which is 
marked on the map, a tract commences which is 
covered almost entirely by Tuff or Tufa, either 
united or in a state. of disintegration, stretching 
about r2 miles to the Westward, till it meets the 
ridges extending from the declivitics of the 
mountain of Tagal towards rhe Southern shore.* 
ZEP Cat. No. 98. 
— 
DUM m or 
