British Association. 237 
sections of them at Saltford, Uphill, Aust, Garden-Cliff, Watchet, 
Penarth, and other places. 
The general section of these beds in the neighbourhood of Bristol 
was then described, and illustrated by means of diagrams. The 
SECTION OF THE RHZTIC (OR PENARTH) BEDS 
(measured at Penarth by Messrs. Bristow and Etheridge, in June, 1864). 
_———— a ai Tough brown clay. 
LOWER tw dl a a . 
Lis aoa op be ee Argillaceous limestones, &c., with tough brown 
clays. Ostrea Liassica, Lima punctata, Modiola 
Argillaceous limestone. [minima, &c. 
Ferruginous paper-shales. 
Grey argillo-arenaceous shale, with occasional 
hard bands containing fossils. 
; ; Sa SS SE SSS Axinus concentricus, Anatina, Leda, &c. 
. Hard marly bed. Modiola minima and Axinus. 
Bands of limestone andindurated marl (in brown 
shale), equivalent to ‘ White Lias’ ? The place 
of the Cotham Marble (not observed here) is 
at the base of this group of beds. 
_. Brown sandy shale. 
Bercy ae Lal Hard grey limestones. Aviczla contorta, Pecten Va- 
loniensis, Cardium Rheeticum, Axinus, &c. 
93 feet. -.--:.----.:-- 
. 
2 
BEDS 
, Highly fossiliferous dark-grey limestone. 
to ease a a Hard shell-limestone: Pecten Valoniensis, &c. 
eH ae Decomposed ferruginous layer. 
ere Impure dark-grey limestone. 
Shell-limestone, very fossiliferous. 
BONE-BED. Dark-grey grit and limestone. 
Dark-brown or black laminated 
paper-shales and blue-grey limestone. 
Avicula-contorta-series ; 25 feet. 
._-—-~—-.- Grey earthy sandstone. 
Bis arate Grey earthy limestone ; Fish-scales, &c. 
Sa Concretionary sandy marl. 
Hard sandy limestone. 
ae ees Hard marls with occasional paper-shales. 
(OR PENARTH) 
SSS =e ae 
oe. = 
as ee ew 
FEE 
S) 
me 
x 
Rg 
is 
Fa 
.-- Hard pale-greenish marls. 
Alternations of soft green marls and harder pale- 
grey marls. 
