566 Scientific Proceedings, Royal Dublin Society. 
“ Diggings appear not to have been in the sandstone itself, but in the 
very gravelly laterite which rests upon the sandstone, but the surface is 
so much broken and altered by the pits that it is difficult to say. The 
workings cover a very considerable area.” 
At the time of Mr. Blanford’s visit (1871) these mines had the 
appearance of having been long abandoned, being covered with 
bush jungle. 
Dr. Heyne (Tracts) stated that— 
“‘In the Ellore district the diamond stratum is covered by a thick 
stratum of calcareous trap.” 
This does not appear to have been confirmed by any subse- 
quent writer, and is apparently a mistake. The thickness of the 
conglomerate is said to be from two to six feet thick, perhaps 
more in some places. 
MuLAILY, OR MaAwavitiy, N.E. oF BEZWARRA. 
As at Golapilly, the mines here also were in tertiary con- 
glomerates (King). Captain Newbold* describes the bed of gravel 
in which the pits were sunk as being “composed chiefly of rolled 
pebbles of quartz sandstone chert, ferruginous jasper, con- 
glomerate sandstone, and kankur, lying in a stratum of dark 
mould about a foot thick.” He appears, according to Mr. King, 
to have been wrong in identifying this deposit, which rests on 
gneiss, with the true old diamond conglomerate of Banaganpilly, 
of which it should, therefore, not be regarded as an outlier— 
though, doubtless, there is some similarity in the component 
pebbles, &c., which form both rocks. 
Dr. Benza believed the conglomerate to be continuous from 
hence through Ellore and Rajahmundry, to Samulcotah, where also 
diamonds are said to have been found. 
PURTIAL, OR PURTEEALI. 
The mines so called are situated near a village of the same 
name, which is not far from 
“ Kondapilly, about 150 miles from Hyderabad, on the road to 
Masulipatam. The property of them was reserved by the late Nizam 
when he ceded the northern circars to the English Government. They 
are superficial, not extending ten or twelve feet deep in any part. For 
-some years past the working of them has been discontinued.” 
* Geological Notes, p. 67, of Carter’s Collection of Geological Papers. 
