Mr. Cumberland on the Strata near Bristol. 103 
12. From the upper surface. 
13. From a ferruginous limestone bed highly impregnated with 
iron, that cuts off these beds and dips conformably with 
them, and is cavernous, and laminated, having 20 stripes 
in its whole thickness of one yard. 
14. The upper lamina involving quartz pebbles very small — 
this stripe of dark red limestone decomposing, 1 find again 
at the river side north of the capstern. 
We now descend and return to No. 120 on the towing-path, 
where the grassy valley full of rubble and red ground embraces a 
space equal to 90 paces, from the lower part of which a small spring 
issues, as before mentioned, near the capstern on the bank at No. 11, 
C. B. Bound mark', proceeding 41 paces from this bound-stone we 
find a small rising bank, a head consisting of ironstone decomposing 
into a marly shale, brought down from No. 11, 12, and 13 (the 
beds last marked) of a violet red colour, and like all the other beds 
before noted, in its dip covered by deeply rufous earth. 
Feet 
121. A solid bed of grey limestone ..... 6 
122. Under it a ferruginous compact breccia without division, 
the limestone and iron as it were melted into each other, 
and very tough, uniting into a ferruginous limestone . 7 
The whole an irregular head of 20 paces long, and 
forming in a sort of twisted small arch upwards dipping 
suddenly northerly, so as to exhibit a sort of hollow way 
of about 12 paces broad, into which lay bending down- 
wards several very narrow stripes of 
123. Hornstone, schistous-looking limestone in a stripe of two in- 
ches each, capped by grey marie and red earth, and simi- 
lar stripes of magnesian limestone, and highly ferruginous 
limestone. 
124. A second irregular mass of 20 paces long, capped by a honey- 
combed-trap-looking bed : over which is red earth. 
