EXCURSIONS. 
.415 
On April 18th the members left Oswestry at 8.30 by train 
for Llangollen, the order of the programme having been altered 
to suit the convenience of several members who had to leave 
the district before the conclusion of the excursions. 
A sharp walk of about two miles brought the party to the 
foot of the Carboniferous escarpment at Eglwyseg Rocks, where 
the Red Basement beds were examined and the escarpment then 
climbed, fossils being collected from the various beds exposed 
on the slope. 
The lower portion of the limestone contains numerous large 
brachiopods — Davisiella Liang ollensis — and it was concluded 
that the lower part of the series belonged to the Seminula zone. 
Higher up the cliff, beds containing a lower Dibunophyllum 
fauna were encountered, and the party then went along the top 
of the escarpment to the extensive limestone quarries above 
Dinas Bran, where beds of Di age were found at the north- 
western end. 
Passing along to the south-east, newer beds were encountered 
until the top of the limestone was reached in Bron Heulog Quarry. 
These beds are still in Di. 
From Bron Heulog eastwards the beds acquired a steeper 
easterly dip and the Cefn-y-Fedw Series was passed over, the 
beds occurring in the following order : — Pebbly Grits, Chert beds, 
and Yellow Sandstones. The return journey was by way of 
Trevor Station. 
On April 19th some of the members drove from Oswestry 
to the racecourse, passing over Coal Measures, Cefn-y-Fedw 
Series, and Carboniferous Limestone. The cherts were examined 
at Underhill Farm and a few brachiopods were collected. 
The famous gravel pits at Gloppa were then visited. These 
are excavated in morainic gravels, and the following erratics 
were observed : — 
Nature of Specimen. 
Source. 
Criffel, Dumfriesshire. 
Dalbeattie, Dumfriesshire. 
Cairnsmore (?). 
Eskdale, Cumberland. 
Granite 
Do. 
Do. 
Do. 
