132 On Mr. Greenough's Geological Work. 



for tlie propose of avoiding mentioning Mr. Smith's " Strata 

 Identified" (p. ii) or his " Stratigr'aphical System" (p.ix), pro- 

 fesses, not to knoiv Mr, Smith's reasons, for the opinion which 

 he ascribes to him: notwithstanding, that I have mvself, years 

 ago, explained those reasons to him, and have repeatedly pub- 

 lished the same in your Work, with confirmatory testimony from 

 my own experience: see vol. xxxv. p. 135, vol. xlii. p. 253, vol. 

 xhii. p. 125 Note, &c. 



One thing has considerably surprised me, and all others with 

 whom I have conversed, who had read Mr. Greenough's Book, viz. 

 that not a word or allusion is found therein, to the Map (" begun 

 and altogether ma.de on Wernerian principles ," see p. 337 of your 

 xlvth volume, and vol. lii. pp. 1S4 and 185 Note), unfounded re- 

 ports concerning which Geognostic Map, have so long, and so 

 unjustly been played off, against the reputation and sale of Mr. 

 Smith's original Map of the Strata. 



I shall have already trespassed too much on your pages, to al- 

 low me to mention herein, more than one thing in Mr. G's Book 

 which concerns myself, and that is, to point out, that the words 

 marked with inverted commas in p. 156, and positively ascribed 

 to Mr. Hutchinson, are not his words !, but my vvords, taken from 

 page 123 (and its Note) of my Derbyshire Report: and further, 

 that Mr. Greenough well knows, that in 1806, 1 made the im- 

 portant discovery (in Surrey and Sussex, regarding the Denuda- 

 tion of the Weald District) which is here alluded to, and gave him, 

 soon after, a manuscript Section of the Country between London 

 and Brighton, for explaining'the same (P. M. vol. xliii. p. 1 20) ; and 

 that my verification and extension of the same discovery, through- 

 out the County and vicinity of Derby, was made, and the same 

 published in Dr.Rees's Cyclopcedia, and in my Report, two years 

 before the time, that either he or myself heard, of the discovery 

 or of the Work of Mr. Hutchinson, or, that of Mr. Catcot, which 

 were brought from Oxford (as I understood) in order to dispute 

 my claims to the first discovery of Denudation, and were lent to 

 me by Mr. Greenough, in June 1813. Although until now, as Mr. 

 G. has been silent to the discoveries of Mr. Hutchinson (who at 

 the beginning of the ISth century was employed bv Dr. Wood- 

 ward in forming his Museum, see Dr. Rees's Cyclopcedia), and 

 those of his pupil the Rev. A. Catcot, /have let slip no oppor- 

 tunity, of referring to their Works, and doing my endeavours, to- 

 wards making them more generally known (see vol. xliii. p. 1 89, 

 vol. xlii. p. 255, &c.); and, in case it would meet your approba- 

 tion, to insert the same, I would send you the Extracts, which I 

 made from these Authors' Works, in 1813, of all the Geological 

 passages that they contain, which appeared to me new, or im. 

 portant. I am, your obedient servant, 



Howiand-street, Aug. 1, 1819. ' John Farey Sen. 



