358 
P. 93. 
Mr. Farey’s Notes on Mr. Bakewell’s Geology. 
tell Mr. B., as Mr. Whitehurst, Mr. Pilkington, 
M. St. Fond, Mr. Mawe, myself and several others 
have written, that Shale, an argillaceous stratum, 
and not Sandstone, rests on the upper Limestone 
of the Peak: in Lancashire, and I believe in West- 
morland also, Red Marl, covers the uppermost 
of the two adjacent Limestone Rocks ;—the third 
and still higher Rock, underlieing the Coals, I had 
no opportunity of approaching, when in that di- 
strict. See Rep. i. 298 Note. 
97, Plate Ill. fig. 1. see p. 315 and 320.—Fig. 2, see 
p- ema 3, see p. 286, and my Note on 
page 45. 
98, I. 10, flat over these *.—* The experiment here, with 
Books, is a representation of no instance in re- 
brea TAP ; 
gular stratification, which J have any where seen, 
or believe to exist; Gravel and Gravel Rocks, 
commonly form such ‘* unconformable’’ masses, 
on the ends of strata, (as observed in my Note on 
p. 45) but no others, I believe; that the Clee 
Hill Basalt, or Jewstone, does not so overlie, [ 
feel partly confident, as is I suppose represented, 
in Plate LI. fig. 2, but which is not clear, from 
the confused account thereof at page 124, since 
the blue mass, may be supposed to be in the back- 
ground, instead of directly over the face of the Secs 
tion coloured yellow and brown. Mr. B’s surprise 
expressed at meeting with a hummock of Basalt, 
intersected, in common with the strata beneath 
it, with a Basalt Vein or Whin-dyke, shows, I 
think, that he is but littie acquainted with the 
facts of the Forth and Clyde Coal field, where 
such hummocks, and dykes too, are very com- 
mon, or with the Rowley Hills near Dudley, which 
Mr. Keir has described, Mont. Mag. xxvill. p. 35, 
or Will. Min. Kin. 2d Edit. ti. ¢79, and i. 66 and 
123, &c. 
When at the Clee Hills, I saw or heard from 
the practical Men, who gave me accounts of their 
sinking, of none of the ** several small Coal- fields,” 
mentioned p. 124, but perceived, the southern end 
of one large depressed hummock or Trough of 
Coal-measures, capt by ‘ conformable” Basalt, 
and underlaid by the uppermost of the three Lime- 
stone Rocks (as mentioned in my Ist Letter, p. 53): 
the middlemost of which, I think I could trace, 
from 
