APPENDIX. 301 
before reaching this point, as it is not seen in the sections afforded by the 
ravines on the hill side in which the slate band (a) is exposed. The 
same limestone (4) occurs further north in its normal position, as will 
be pointed out in the description of Section No. II. Further south the 
limestone bed thickens out very considerably, but is lost sight of near 
the end of the Chintapilly ridge, being covered up by a great thickness 
of massively coneretionary kunker and also by a great talus of 
quartzite debris. The slate bed (4) is underlad by the basement 
quartzite (Vo. 1) which crops out to form the summit ridge of the 
Oostapully hill. The surface of this bed, though but very slightly 
friable, has been broken up considerably by the diamond miners, by 
whom the talus surrounding the hill has also been searched at a recent 
period. 
The other diamond mines before mentioned appear, from the highly 
weathered condition of the rubbish heaps, to be of great age. The 
base of this quartzite formation (Wo. 1), which I propose to designate 
as the Juggiapett bed (from the fact of the town of Juggiapett standing 
on its edge), 1s formed by a coarse brown grit of small thickness, separated 
from the mass of quartzite by a thin bed of dark grey slates. The grit 
bed rests on the uneven and eroded surface of the granitoid gneiss. This 
is well seen about half a mile south of Ramanapetta. 
Description oF SECTION No. II. 
` From Nemalipuram to Goodimetta, 104 miles. 
A considerable amount of agreement will be found between this and 
the foregoing section on examination of the succession of formations 
exposed along its line. 
The direction of the section is from east to west from a point 
two miles west of Nemalipuram to a point two miles east of Goodimetta, 
thus cutting across the Chintapilly peninsula nearly at its widest part, 
(361 ۱ 
