JULY — SEPT. 1S57,] at Kola on the Godavery. 259 
that the probabilities were against Coal being found in them or 
otherwise. 
On my arrival at Kota, I found I was still in the same series of 
sedimentary rocks I had been passing over in my journey along 
the river, and was fortunately soon able to identify the limestone 
at Kota under which tl* Coal was presumed to exist, with the 
limestones I had observed at other places on the river, one of 
which was at a point 80 miles lower down. 
This limestone although seen cropping out at several places on 
the river — at Y^jitoor, a village, 2 miles below Chintagorem, at a 
point on the left baiik opposite Pallemella, (Warrugoora,) and sub- 
sequently as I discovered at a place a little north of Kumalapet- 
ta, I had not been able to observe beyond a very small extent in 
thickness, I therefore proceeded on arriving at Kota to carry out 
my original intention to start my people to bore, and immediate- 
ly selected a site upon this limestone which offered the best facility 
for carrying on the work. 
A Sketch Map* shoAving the nature of the rocks and their incli- 
nation as indicated by an arrow pointed in the direction in which 
they dip is herewith appended, the dark blue line shows the out- 
cropping of the limestone. 
At Dowlaishwerum there are sedimentary deposits, consisting of 
a series of thin layers of very bright colored clays, above this a 
very irregularly stratified sandstone, of various degrees of hard- 
ness, a very small extent of this sandstone now remains in this 
district in isolated hills, it having been removed by the denuding 
action of water from the intervening valleys, its thickness does not 
seem to be very great about 50 to 60 feet, this and the underlying 
clays appear to be the result of the decay and washing of the vol- 
canic hills lying to the north. 
This character of formation extends to Rajahmundry.* 
Proceeding thence along the course of the Godavery, the banks 
consist of alluvial deposits until we reach Polaveram, we now enter 
* Vide Plate I, 
1 
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