CHAP. 3.] CONCLUSION. 289 
The dark-grey argillaceous limestone might be a specimen from 
the Koilkoontlas, while the very fine light-colored silicious limestone 
of Chota Arti is more like a variety of the Nerjee beds of the Jum- 
mulmudgoos. The latter might be Vaimpully rock; but it is more 
like the same colored limestone between Kurnool town and the neigh- 
bouring village of Culloor, a mile or so to the south. 
The quartzite-sandstones and grits from this Nagpur country are 
like our quartzites: only resemblances in these cannot be relied upon with 
much certainty, as like quartzites are common to both KARNÚL and 
KADAPAHS. There is one specimen, however, of felspathie grit from 
Botajere, which is like our felspathie grits, and which seems to occur in 
the bottom beds of both formations. 
The most marked resemblance, however, between any of the Madras 
Close resemblance to rocks and those of Rewah, Bundelkund, &c., 
Lower VINDHYANS. and Gwalior, is to be seen in certain strata of the 
KADAPAH formation and others of the Lower vinDHYANS, or of the still 
lower series at Gwalior. 
In the Lower viNpHYANs of the Sone valley there is a tolerable 
resemblance to certain groups in the KADAPAHS, except that there is no 
such prevalence of slates and clay-slates on the Sone. Mr. Medlicott’s 
< eoralloid limestone’ is like the ‘corrugated beds’ in the Vaimpully 
limestones, or the bands occurring 1n the Tadapurtee slates. His series 
of silicio-felspathic rocks resembles those in the same sub-group, only 
that the first are in some cases most “ ashy’-looking in their contained, 
and evidently travelled, particles of foreign mineral. A specimen of 
columnar jointed, lightly speckled, trappoid rock bears a resemblance to 
the more compact spotted shales or ‘ashes’ in the Tadapurtee slates. 
Mr.. Medlicott had no cases of contemporaneous traps among these rocks, 
so did not feel justified in calling such ashy-looking beds by any other 
more significant name than ‘trappoid.? In the Cuddapah field there are 
2N MO ی‎ )} 
