112 Mr.Farey’s Reply to Mr. Bakewell—Faults in Derbys. 
port i. p. 280, and in your xxxixth vol. p 82; from having 
its route rather more circumstantially described than the 
other two, mentioned by Mr. B. in your 46th page, appears 
to have escaped his open attack: but on consulting his 
Section of Strata between Sheffield and Castleton in Plate IT, 
it will be seen, that this fault has been denied a place 
therein, at the foot of the Castleton Hills, and in conse- 
quence, the firsé and the fowr/i Limestones are confounded 
together, and we are told p. 48, The compact limestone 
(7) here makes its appearance as the base of Mam Tor, and 
further west the same Limestone forms entire mountains.” 
Here again the baneful effects of Mr. B’s ** simple ar- 
rangements,”’ or rather, his mongrel Werno-Huttonian 
Theory, are visible, on his statements of Geological facts : it 
being necessary, to that part of his Theory, which assumes the 
Peak Limestone to be identical with those in the south of 
the county and in Leicestershire (as mentioned before in 
this Letter) and that it is also identical with the Yorkshire 
WR, and Lancashire Limestones (as mentioned in my 
ist Letter), that this Peak Limestone should be considered, 
only as one Rock, notwithstanding all Mr. Whitehurst’s 
Sections *, and what I and others have done and written 
since, to show the contrary: and at p. 284, he says ‘ the 
beds of basaltic amygdaloid do not extend beyond the Peak 
of Derbyshire :’”’ nor even so far as the northern extremity 
* Irefer here to two Sections which Mr. Whitehurst published in 1778, 
in his “ Inquiry,” in which the éhree Toadstone Strata are represented, and 
three others in which the two uppermost are represented, and the lower 
$trata omitted only for want of room in his plates: in all of which Sec- 
tions, the toadstones are represented to preserve their thickness and paral- 
lelism, as perfectly as the Limestones. It may be proper here to mention, 
that this structure of the Peak of Derbyshire, consisting of four Limestone 
Rocks interlaid by three toadstones and these covered by Shale and coarse 
Grit, was well understood long before Mr. Whitehurst wrote (or commenced 
his Geological observations I believe) by some of the practical and able 
Miners and Mine Agents of those days. 
In or very soon after the year 1750, the late Mr. George Tissington of 
Winster, (to whom Mr. W. acknowledges his obligations), by the assistance 
of Mr. Anthony Tissington, made a Section from Matlock Bank across 
Masson Hill to ible and Aldwark, of which the latter Gentleman, who is 
still living at Bonsal, I believe. kindly sent me a copy, through a friend, 
about two years ago, which Section is well worthy of being published on 
some future occasion, especially as it will show, that the practical Men of 
the middle of the last century, who so well explored the district, knew no 
more of the tremendous fissure accompanying the vale of the Derwent, than 
the present Miners do, although the same makes so conspicuous a figure in 
three of Mr. Whitchurst’s Seciions near this same spot (see your xxxist vol. 
p- 36, and Report i. 473 note, and 490) and in his theury of valleys, which, 
with some additional errors combined therewith, is so strenuously insisted 
on by Mr. De Luc to the present day, sée Monthly Mag. vol, xxxili. p. 516, 
and vol, xxxv. p. 316, of 
