[To face p. 308.] 
ic ocks in Pembrokeshire, South Wales. 
■ 
V cal Scale about 1 inch to 1000 feet. 
Promontory, Pembrokeshire. 
stop Coast N. of Llanrian, Pembrokeshire. 
Abereiddy. 
ieitf the Treffgarn Rocks, Pembrokeshire. 
Treffgarn. 
b. Pebidian Formation ] 
a. Arvonian ,, V Eozoic. 
a. Dimetian ,, ] 
f Igneous Rocks. 
