Dr. Adam on the Geology of the Banks of the Ganges . 351 
hundred feet ; and on the summit is placed the fort of Ohunar, 
which derives its principal strength from the natural steepness of 
the elevation. The rock on the north-east side is disposed in 
horizontal strata, so regular and uniform, that at a short distance 
it appears the work of art, and might be taken, from the colour of 
the stone, for a buttress built of bricks. On the opposite, or south 
side, however, the rock projects at various points, with a slight 
degree of elevation above the horizon ; but though hot so beauti- 
fully regular as on the north-east, the strata in general observe the 
same direction. Specimens of both yellow and reddish micaceous 
sandstone were taken from the north-east side ; these appear to 
differ only in the colour and cohesion of their particles. The 
country around Chunar abounds with stone of a similar description, 
and at Mirzapore it forms a principal article of traffic. 
From Mirzapore to Cawnpore the banks of the Ganges exhibit 
no rock ; and rolled stone is found no where in its whole course. 
The clay, however, sometimes assumes all the hardness and 
solidity of stone, and is scattered over the borders of the river and 
the adjoining fields in various shapes, indicating, by the irregularity 
of surface, and the general stalactitic appearances, its having been 
thus altered by deposition from water. The specimens collected 
consisted of limestone and breccia, from near Bhaugereperest, and 
siliceous and calcareous sandstone, with mica much water worn, 
from the wells at Ghazypore. I observed a beautiful arrangement 
of these figured stones in the channel of a small stream which 
had been recently dried up ; they were about a foot high, and 
connected at the summit, so as to form a platform supported by a 
series of descending pillars, some of which were complete, and in 
contact with the surface of the ground, and others, having been of 
Vol. V. 2 Y 
