364 Dr. G'dly in Reply to Mr. Farey. 



paragraph, p. 1S5, Mr. F. has read and quoted from it : and al- 

 though I wrotQ it for the express purpose of stating that the 

 stjatitication of Derbyshire forms a striking exception to every 

 thing I had been saying respecting the mountain h'mestone in 

 otlier parts of England; yet Mr. Farey has several times in the 

 most unhandsome manner ajipjied to the limeslone of Derly- 

 s/iire, what I had said of the mountain limestone so commonly 

 associated ivltk the red sandstone. But the strangest thing of 

 all is, that after Mr. F. had understood me in the way above 

 mentioned, he should cite the passage where I had asserted the 

 absence of the red sandstone, and upbraid me for having spoken 

 in too unqualified a manner on the subject, as the under strata of 

 the 4th limestone are still unknown, so that the red sandstone 

 may still be found under the limestone. 



After having quoted authorities to show that a red sandstone 

 occurs under the mountain limestone in Somersetshire, Glou-' 

 cestershire, Herefordshire, Monmouthshire, Brecknockshiie, 

 Shropshire, in the north of England, and in Anglesea (as Mr. 

 Farey now mentions), are not these facts sufficient to show that 

 it is not merely an accidental association, but that it will be 

 found still more general, particularly if it be true that the red 

 sandstone commonly occupies the low part of the country? 



I have not charged Mr. Farev (towards the bottom of p. IS/) 

 with the inaccuracy and confusion of not knowing the relative 

 iige and situation of the red marl to be more recent or aljove 

 the coal-measures, as he has most falsely asserted. The hitter 

 part of the sentence, " that not only members of the floetz but 

 even of the transition series have been referred to this forma- 

 tion," is plainly the inaccuracy with which in part only I have 

 charged Mr. Farcy. 



I have little doubt that this letter will be followed by another 

 reply from Mr. Farey: but as I have. sufficiently attained my pur- 

 pose by correcting the mis-statements which Mr. Farey has made, 

 and as I can employ n)y time much more to my inclination than 

 liy carrying on a controversy of tliis nature, I beg leave to say 

 that I shall on no account take any further part in it. 

 I am, sir. 



Very respectfully yours, 



York Ciesrcnt. Clifton, Biistol, W. H. GlI.BY, M.D. 



Nov. 11, 1U15. 



P.S. — Is it not probable that the 4th limestone of Derbyshire 

 may hereafter be found to rest on the sienite ? 



Tlie word Ness has been misprinted iox Ross hi Herefordshire. 



LXVIH. Further 



