Chap. XI.] cuddalore sandstones. 173 



At Capper's hill, (as the escarpment is termed opposite Cuddalore,) 



Atthe Capper's hill or *^® ^^^^^ ^''^ ^o^^^e grits, sometimes white and 

 Cuddalore. Sometimes ochreous and mottled, and more or 



less conglomeratic. To the South of the Capper's hill tank the beds 

 are argillaceous, and farther in the same direction, they pass into a 

 nodular ochreous sandy clay, which becomes lateritic at the surface. 

 The escarpment dies away about 4 or 5 miles to 

 the South of Cuddalore, and beyond this little or 

 nothing . is seen of the Cuddalore formation, owing to the red soil 

 which thickly covers the country. 



In the village of Andanapet, to the North of Vullupullum, a laterite is 

 seen in some wells, but I could not ascertain whether it was a superficial 

 deposit or a clay bed of the Cuddalore formation. 



We now pass on to Pondicherry, where, together with the Cretaceous 

 Eed Hills of Pondi- ^®^^' *^® Cuddalore group re-appears to the North 



"^" of the Ariancoopum River. From the South-east 



corner of Ossatary tank, the plateau known as the " Red Hills,'' 



and of a maximum width of 4 miles, extends to Mundakuppum, a 



village on the coast 10 miles North of Pondicherry. This plateau is 



bounded nearly all round by an escarpment such as I have previously 



described, or by a steep slope where the escarpment is wanting, and 



numerous good sections of the beds are exhibited both on the East 



and West flanks of the little plateau in the nullahs which carry 



off its drainage. Again, 6 miles to the West of the Red Hills, a 



corresponding little plateau of less elevation and not exceeding 1 or 2 



miles in width, runs from the village of Trivicary 

 At Trivicary. i i • s i i ■, -, ■ 



(iiruvakkerei,) where these beds m question were 



first noticed by Mr. Kaye, to a distance of 8 miles, parallel with the 



Red Hills, the intervening valley from which the Cuddalore beds 



have been denuded being occupied by the Cretaceous rocks previously 



described. 



