Carb0ttrfcrous 0f 
S00tlj-®i;est #otoir. 
By william BRENDON GUBBIN, M.D., C.M. 
‘HE somewhat striking differences, both in rock struc- 
X ture and in the nature of their organic remains, 
between the Carboniferous Limestone series in the northern 
and southern areas of Britain, have hitherto offered an in- 
surmountable barrier to the establishment of any cor- 
relation between their respective zones ; but the recent 
attempt by Dr. Vaughan to establish a series of zones 
founded upon the Coral and Brachiopod sequence seems 
likely to achieve better success than that of any previous 
geologist. 
In the small area of S.W. Gower a remarkably interesting 
series of Carboniferous Limestone occurs, rich in fossils, 
and exhibiting very accurately the successive zones which 
Dr. Vaughan has mapped out for the Bristol area. 
The scenery of this district is of the kind so commonly 
seen in Carboniferous Limestone regions, a somewhat 
monotonous plateau, scarred by sharply-cut gorges. The 
coast line from Oxwich on the east to Rhosilly on the west 
42 
