32 ON THE GEOLOGY 



After descending the hills, and advancing about three miles into the 

 valley, a new field opens ; the older rocks are laid bare and exposed to 

 view, and instead of horizontal stratification, they become highly inclined, 

 sometimes perpendicular, and altogether unconformable to those which 

 I have just passed; I shall not here mention the iro7i mines of Tendukaira, 

 because a satisfactory account of them would swell this paper too much ; 

 but I will observe one circumstance which may, perhaps, be acceptable to 

 travellers — the conical hill, situated about one mile and a half westward of 

 Tendukaira, is an isolation of trap, and its summit was once crowned with a 

 cluster of basaltic columns of a greyish green colour ; but some violent effort 

 of nature, such as an earthquake, has dislocated them, and they now, even 

 in their ruins, present an object worthy of the notice of a traveller. 



From Tendukaira, I made a detour to Garka Kota, to meet the Agent 

 of the Governor General, and my route thither enabled me to lay down 

 the eastern boundary of the trap formation ; a reference to the map, there- 

 fore, will best explain the result of this part of my route. I always found 

 the trap in association with earthy lime- stone, and the whole series repos- 

 ing upon red inarle, or sand-stone. 



From Garha Kota, I returned to Great Deoi-i, and proceeded across 

 the Sandair hills to Jeheipur. 



After quitting Deori, the rock was trap for about three miles, and 

 then commenced the sand-stone of the Bandair hills, which continued 

 uninterrupted, until I descended the eastern escarpment of those hills, 

 which again brought me into the valley of the Nermada river. 



The sand-stone of the Bandair hills, is mottled (red, speckled with 

 white spots or streaks), its stratification is horizontal as far as the eye 



can 



