EUNDELCUND. 57 



Retaining the same number of groups and their names, I would 

 suggest a little alteration in the arrangement of their contents, or 

 subdivisions. These appear to have been grouped more from the 

 configuration of the country than from stratigraphical affinity. 

 There is the table-land mass of Bundair, made up of sandstones and 

 shales, also that of Rewah made up of limestones, sandstones and 

 shales, &c. — but it seems to me unnatural to separate the shales and 

 limestones of the Rewah plain, from the shales of the face of the Bundair 

 scarp of which they are a continuation, and to place them with the Rewah 

 sandstones, with which they are every where in strong lithological 

 contrast : similarly I would place in one group the Rewah sandstone and 

 all between it and the Kymore sandstone. The lower limit of the 

 Kymore group is not so easily settled; I suppose the limestone placed 

 in that group by Mr. Oldham is the Rhotasgurh rock; there is no equi- 

 valent for it on the north, unless it be the Tirhowan limestone which 

 cannot here, be placed in the same group. The preliminary sketch, to 

 which I allude, having been based on a cursory visit to the district by 

 himself and others of the Geological Survey of India, and not on detailed 

 examination — while the correctness of other observers, on whose authority 

 this sketch might have been extended, is open to much doubt, — I 

 have very little doubt that Mr. Oldham will confirm my suggestions. 

 The subdivisions of the groups which I would propose, are — 



1. — Bundair — sandstones and shales with limestones. 



2. — Rewah — sandstones and shales. 



3. — Kymore — sandstones and grits, or shales. 

 I described the condition of the Kymore sandstone for the whole 

 Conditions of deposi- distance between Tirhowan and the Dessaun (150 

 tlon " miles) as that of a deposition against an obstruct- 



ing ridge. I would now add that the whole Vindhyan formation 

 shows the same relation to that line of boundary ; the beds individually 

 and also the groups of beds showing a corresponding arrangement : 



I 



