212 KING: KADAPAH AND. KARNUL FORMATIONS. [PART III. 
looking a set of rugged and black silieious limestones or caleareous sili- 
cious rock as could be imagined. "They are not intrusive however, and 
it seems impossible to get rid of their unconformity to the quartzites and 
slates which cap the mountain unless they were coralline deposits. 
These limestones and quartzites of the Baukrapett range have been 
pus oup OT placed provisionally in the next higher group, 
principally because there are as yet no sufficient 
evidences of dislocation to allow of their being Poolumpetts. However, 
the question isequite an open one; and certainly, as far as resemblance 
goes, the beds of Baukrapett Conda resemble those of the Chey-air 
series more than any of the Cumbums, to be described hereafter. 
CHAPTER 4.—' Tug NuLLAMULLAY BEDS. 
Byrenconda Quartzites. 
The series of slates last described is overlaid unconformably by the 
quartzites of the Polleonda range, which set of 
The Poolumpetts are ; i 
overlaid unconformably rocks is traceable northwards for a good distance 
b tzites. 
LE along the western flanks of the Nullamullays, until 
just opposite Nundial, when their outerop turns eastward and appears as the 
summit of the highest mountaim* in the Kurnool District, Byrenconda, 
which is on the western side of the Cumbum 
Of Byrenconda moun- 
pun tanks. From  Byrenconda the outcrop turns 
sharply south for some short distance, and then turns north again, as the 
tank-bund ridge of quartzites at Cumbum, and is eventually lost in the 
east and west valley of Dorenall, or the Muntaral Cunnama. 
On the north side of this valley there is again a great show of 
i coarse quartzite grits, &e., which on some grounds 
Seeming representa- J ; 
tives in the  Kistnah would seem to be representative of this sub-group, 
Nullamullays. 3 
for, when these are traced  westward into the 
* 8,500 feet above the sea. See Section No. 2. 
