BUNDELCUND. 27 



though some of them on the other hand must be looked upon as subse- 

 quent to the Tirhowan group ; the difference between the two is so slight 

 and they are so mixed up that it will be difficult to separate them exactly. 

 In colouring that portion of the map, I was merely guided by the fact of 

 disturbance, so that it will no doubt be easy to find Vindhyan rocks 

 within the area coloured blue. 



The agate breccia that has been mentioned as a constant attendant of 



the Tirhowan limestone is difficult to account for. 

 The Tirhowan breccia. 



It does not at all resemble the siliceous bottom-rock, 



it is very constant in its character over the whole area, and thus lies 

 between perfectly horizontal groups, although in other respects it shows 

 few features of a purely sedimentary rock. The siliceous matrix, ap- 

 parently derived from solution, sometimes predominates, yet the rocks in 

 immediate contact show no influence ; the fragments are most commonly 

 of agates. I thought the section at Ajoura might give some suo-o-estion, 

 but I failed to develope it. 



But for the section on Pulkoa hill, one might be confused as to the 

 Anomalous relations true relations of the Tirhowan limestone and the 

 of upper Semri groups. Pulkoa schists. These are most frequently met 

 without the covering limestone ; the latter is last seen in the upper valley 

 about Sagowni, while the schists are pretty continuous to beyond the 

 Dessaun ; and in much closer proximity, their realtion is not superposition. 

 In the valley of Saleia, and about Banki the limestone is well seen, 

 while the hill over Koopee, a couple of miles to north, is altogether of 

 Pulkoa schists ; this seems a tempting case for a fault, but as far as I 

 could see, the limestone rests on the lower Semri rocks, the Pulkoa 

 schists having been removed. Much important data may be obtained 

 in this vicinity ; on the south of this limestone, at Chundunkeera, the 

 Kymore shale is seen, the same as at Keriani, but here the scarp is 

 continuous between them, and were it not for the covered nature of the 

 undercliff, their relation might be fully made out. 



