BUNDELCUND. 59 



are often as coarse as the massive underlying beds, these layers are 



generally finely ripple-marked : the height of the Rewah ridge at Giree 



may be 500 feet, of which 150 are shaly. Above Giree the steep gorge 



gradually lessens, the river rising and the sandstone surface lowering 



till each cuts the Rewah plain a short way below Singhora, where there 



are falls over the top beds. 



In describing the Semri rocks I took the Kymore sandstone and its 



conglomerate as an upper horizon and so indeed 

 Kymore shales. 



it happens to be the bottom rock along the present 



outcrop of the junction, with but one important exception: moreover, 



I have extended to the Vindhyans the notion of a partial original extinction 



along this granitic boundary, a fact so plainly established for the Pulkoas 



by their actual overlap: the exception I allude to makes the case 



equally evident for the Vindhyans, and supplies a deficiency in the 



Kymore group. At Keriani, close to the Kane, there are under the 



red conglomerate about 150 feet of fine crumbling yellow shale, of 



decided Vindhyan type. It will be recollected that on the outlying 



hill of Pulkoa, not more than two miles off, the Kymore sandstone rests 



immediately on about 300 feet of Tirhovvan limestone and Pulkoa shale: 



a precisely similar section may be seen 15 miles to south-west at Chun- 



dunkera and Koopee. Here then, in the Vindhyans themselves, there is 



the overlap of an important member. 



I have very little hesitation in applying the same rule to the Rewah 



^ , . T, , shales : already since their elevation along this 



Overlap m Rewah J & 



direction they are reduced to a third of their 



thickness at the Sohagee or Kuttra passes ; the Kymore sandstone hills in 



front of them are as high as the Rewah sandstone which overlies them, and 



though the denudation has left no actual case of overlap, I am inclined to 



believe that the upper beds of this outer ridge of sandstones are really 



cotemporaries of the Rewah sandstone. I feel 

 And in Bundair shales. ■ 



inclined to conjecture the same tor the Bundair 



