110 
Mr. Cumberland on the Strata near Bristol . 
No. 
decomposed limestone, which the miners use for stopping 
up the grooves made to blow the rock, being purely 
calcareous. 
238. Bed • 
239. Compact blue 
240. Compact blue resting on 
241. Schistose marie 
242. Rubble bed of ditto • 
243. Yellow stopping earth, decomposed limestone 
244. Brown earthy limestone 
245. Broken specimens of blue limestone . 
246. A bed of limestone much cracked across .... 
247. Yellow stopping, fine, earthy limestone . 
An irregular vein. 
248. Broken beds of schistose limestone .... 
249. Ditto 
250. Broken and separated, all similar to N°. 245 . . . 
Ft. 
2 
I 
1 
2 
1 
1 
3 
2 
4 
Here commences a noble set of beds of fine pure oolite, 
without any organized bodies ; fracture splintery, con- 
choidal, sometimes the best in all our rocks for burning. 
Stained from light rufous to light grey. 
251. A thin bed of oolite 2 
252. A great bed of ditto, with fractures innumerable, in a per- 
pendicular direction, computed at . . . . 32 
253. A ditto of ditto, scarce any division . . . .15 
254. A ditto of ditto .10 
255. A bed of oolite winding . . . . . . 8 
256. A ditto . . . . « . . . . 2 
257. A ditto, in broken masses, by computation, . • . 23 
Including the termination of these beds at the Black 
Rock House, where is the powder magazine and the forge. 
In. 
4 
5 
3 
8 
4 
9 
6 
6 
6 
