26 HAYDEN : GEOLOGY OF THE PROVINCES OF TSANG AND 0. 
(a) Agang and the Phari plain. 
This locality has already been referred to above (p. 21) in con- 
nection with the Dothak series. At a short 
llmes^iones. distance to the east of Agang a small valley 
opens on to the Phari plain ; on the right side 
of the entrance an isolated outcrop of limestone occurs, underlain by 
dark slates with some quartzite. At about a mile above the mouth of 
the valley two streams join, the one coming from the north-east and 
the other from the south-west ; on the right side of the latter is a 
low ridge capped by thin-bedded limestone which contains a few 
fossils ; these are unfortunately rather badly preserved, while the 
matrix is so hard that it is very difficult to extract them. Only a 
very cursory examination could be made of the outcrop, and conse- 
quently very few specimens were collected ; these include a number of 
small brachiopods, which appear to belong either to liassic or rhsetic 
(Dachstein) species and comprise a Waldheimia either identical with, 
or closely allied to, W. resupinata Sow., species of Rhynchonella, 
Spirifcrina and Spirigera. 
This limestone appears to pass down into the extensive series of 
calcareous shale and limestone which forms the hills to the east of 
Kamparab and Dothak (" Dothak series " ). Lower down the valley 
on the left bank of the stream just mentioned several blocks of coral 
limestone were found ; their relations to the brachiopod limestone could 
not be definitely ascertained, but they appear to occur between it and 
the overlying slates. The slates are exposed on the right side of the 
valley ; they are much disturbed and crushed, but yielded an impres- 
sion of an ammonite and some small lamellibranchs. 
At the mouth of the valley two small outcrops of limestone occur 
in the slate. This dips at high angles to the north and, like the slate, 
is greatly crushed, the fossils having been almost completely obli- 
terated ; crinoid stems, however, are very numerous, but being 
entirely changed into crystalline calcite, are not determinable. Here 
the valley debouches onto the Phari plain and the section ends. 
( U7 ) 
