39 BUNDELCUND. 



the hill north-west of Serwah is entirely composed of it — when so seen> 

 its bedding is moderate and regular, but near any junction it is often 

 very massive : horizontally is its very general condition ; in the lower 

 levels, where it is sometimes associated with shaly beds, it sometimes 

 is affected by their earthy composition and their twistings. Lithologically 

 it closely resembles its type ; dense texture, saccharine lustre, and light 

 yellow-pink or gray color. The silicifying influence which I have 

 shown to have been connected with the formation of the Tirhowan 

 limestone, though generally keeping itself distinct therefrom, is nere 

 very decided but more diffused — the rock is seldom free from silex, 

 though, here too, this substance shows a manifest tendency to predo- 

 minate towards the original boundary of the group, presenting all the 

 characters of segregation. The position of this limestone is, I think, 

 confirmatory of the idea that the geological boundary I have described is 

 indeed one of original limitation. In the case of this limestone there can 

 be no doubt that the small areas mapped are very approximately the 

 original limits of the rock, and it is strange, considering the probable 

 antiquity of all these strata, how closely the present denudation of the 

 Bijawur rocks corresponds with what it was then. The Bijawur forma- 

 tion presents generally a contorted arrangement of very hard and of very 

 soft rocks, resulting in the excavation of intricate irregular valleys, of 

 which the shading on the map gives no idea ; the present level of these 

 valleys is but little raised above that of the granitic plain, from which 

 they are every where separated by a very decided ridge. It is probable 

 that this limestone was once as high at all parts of its area as where we 

 now find it thickest ; however this be, we now find it for the most part 

 cut down again to its original floor, about the present drainage level ; for 

 instance, " the limestone junction is very intricate along the Bagna valley ; 

 some of the low rugged mounds in the valley are of it, others are points 

 and ridges of the jasper rocks weathered through it. In going from 

 Bagna to Beeja Khoon, one crosses the jasper rocks and the limestone 



