KAMTHI. 73 



Irai enters the field, the Kamthis are in contact with gneiss ; but near 

 Moharli, the Vindhyan sandstones are in juxtaposition to them. 



The^boundary was not so easily demarcated when the strong con- 

 trasting gneissose rocks were replaced by Vindhyan sandstones, many of 

 which are very similar to those of the Kamthis. And when, in addition, 

 the boundary ran for many miles through a deserted and nearly trackless 

 part of the country, covered by forest, bamboo jungle, and vigorous over- 

 topping grass, the difficulty of following it closely was so great, that I 

 merely determined it at a few accessible points, such as Moharli, Nimbara, 

 Hardih, &c. 



Judging from the dips, it is evident that the boundary of the 

 Kamthis and the Vindhyans is a fault. South of Hardih, in the Andari 

 river, the beds are turned up at high angles, and elsewhere along the 

 boundary there is a rapid increase of slope near the edge. There is a 

 cross-fault at Hardih. Opposite Pipalkuta gneissose rocks are again 

 in contact with the Kamthis, and that relation is maintained (with two 

 exceptions near Borda) as far as Karinja. Below Karinja, limestones 

 of the Vindhyan series are the border beds. 



The town of Chanda is built upon the lower sandstones of the 



Chanda, built on lower K amthis, and near the north gate some of the rock 



sandstones. ig i ncorpora ted with the wall. It is the same 



variety as that seen at Ghiigiis. Richly ferruginous sandstones occur 



east and south of Babupet, and are also seen on the road to Ballarpiir. 



Chorwat and Isaptfr, two localities mentioned as having yielded vege- 

 table remains, are both near Chanda, — Chorwat 

 Chorwat fossil plants. 



being 3 miles south of the Victoria gate, and 



Isapiir 4 miles south by east. The radially striated plant, determined 

 by Dr. Feistmantel to be an Actinqpteris, is found in a somewhat soft 

 ferruginous sandstone, exposed in the stream north of Chorwat that falls 

 into the Irai on its right bank. Seeds and fragments of stems were the 

 only other remains. 



( 73 ) 



