ON EXCAVATIONS IN THE PALAZOZOIC ROCKS OF WALES, ETC. 183 
and its north side, being cut into the soil, touches rock at two portions of 
its length. 
Both these expcsures were much overgrown; the upper one, which 
is on the field side of the hedge, showed shale in association with gritty 
- 
Ba Lilttle 
&° Caradoc 
Stam mat 
Scale of Fret 
lec ot SH ooo 
Wnts = 
Excavation No. 20. Shoot Rough Road, Upper Section. 
flags, in which Professor Lapworth had previously found fragments of 
trilobites ; the lower exposure consisted of sandstones, grits, and shales 
seen only in the road gutter, and from somewhere in this lower length 
Professor Lapworth, in company with Mr. Rhodes, had collected Orthis 
Christiani@, Kjerulf (or a closely allied form). The exposures were opened 
up by excavation, and the following sections displayed. 
