ranges separate, the southern still betraying a nucleus of granite,
forming the Satpur range, which divides the valley of the Taptee from
that of the Nerbudda. The Paras-nath range is, though the most
difficult of definition, the longer of the two parallel ranges;
the Vindhya continued as the Kymore, terminating abruptly at the Fort
of Chunar on the Ganges. The general and geological features of the
two, especially along their eastern course, are very different.
This consists of metamorphic gneiss, in various highly inclined beds,
through which granite hills protrude, the loftiest of which is
Paras-nath. The north-east Vindhya (called Kymore), on the other
hand, consists of nearly horizontal beds of sandstone, overlying
inclined beds of non-fossiliferous limestone. Between the latter and
the Paras-nath gneiss, come (in order of superposition) shivered and
undulating strata of metamorphic quartz, hornstone, hornstone-
porphyry, jaspers, etc. These are thrown up, by greenstone I believe,
along the north and north-west boundary of the gneiss range, and are
to be recognised as forming the rocks of Colgong, of Sultangunj, and
of Monghyr, on the Ganges, as also various detached hills near Gyah,
and along the upper course of the Soane. From these are derived the
beautiful agates and cornelians, so famous under the name of Soane
pebbles, and they are equally common on the Curruckpore range, as on
the south bank of the Soane, so much so in the former position as to
have been used in the decoration of the walls of the now ruined
palaces near Bhagulpore.

In the route I had taken, I had crossed the eastern extremity alone
of the range, commencing with a very gradual ascent, over the
alluvial plains of the west bank of the Hoogly, then over laterite,
succeeded by sandstone of the Indian coal era, which is succeeded by
the granite table-land, properly so called. A little beyond the coal