Enumeratio?i of Strata in the Red Marl Series. 283 



descriptions have bean qiven or qiloteri. concerning- these Hills, 

 I could not find these applying, to more than 07}e side of them 

 (thg western), and whicli I consider, ratlier too much like hearing 

 one side of a storv. If ever I should see the very highly impro- 

 bable ^ight (p. 188), o; a granite mountain 3000 feet high, rising 

 out of a gravelly piain : the Doctor may rest assured, tliat I am 

 too well aware of, that grossest of absurdities, in his favourite 

 Geognosy (Tlzp. i. p. 134 Notej, to confound the alluvia of 

 the plain, with 5<ra<V? ot ..;iy kind: — certainly I do, and scores 

 of others of my acquaintance do the same, most heartily despise 

 every such " systematic- arrangement," should they even issue 

 from the university of Edinburgh (Dumfries-shire, p. 1 1 1), or the 

 British Museum, (Dr. Rees's art. Floe.tz). 



I beg to solicit the Rev. Mr. Townsend's ;ittention, and reply, 

 to what Dr. G. says in p. 188, concerning Brandon Hill, and as 

 to micaceous sandstone, being found in the upper Red Marl, in 

 Gloucester,jhire: — I can assure him of its frequent occurrence 

 in and near Derbyshire (Rep. i. 148, 466), and in very nu- 

 merous other situations (see also Dr. Kidd's Geo. pp. 10, 107), 

 however the same may startle this stickler for "systematic ar- 

 rangement." 



In enumerating the beds of the Red Marl (p. 190), Dr. G. 

 mentions, a cuarse breccia or conglomerate, as the lowest of 

 ■theui : I beg to state, that I have never seen this to be the case: 

 in all the long range in which the yellow J^imestone (answering 

 to the Doctor's limev,tone, breccia, or conglomerate, 1 believe, 

 as mentioned p. 342 Note, vol.xlv ) being unconformably over 

 the Coal-measures of Nottingham, Derby, York, Durham and 

 Northumberland Counties, a fine-grained sand, or soft sand- 

 stone, invariably lays mider the Limestone, or next to the Coal- 

 measures, as 1 have particularly mentioned in the note on p. 410 

 of the 2d volume of my Derby Report, concerning that County 

 and its vicinity: and a Letter now before me, from Mr. Thomas 

 Fenwick, an eminent Cloal-viewcr in the Tyne and Wear district, 

 who is also the Director of a large Colliery at Garforth* in 

 Yorksliire, and who is therefore well acquainted with these di- 

 stant coal districts, mentions, that a similar sand of considerable 

 thickness, i.v alwaijs fuund under the edge of the buff or yellow 

 Limestone, after it passes out of Yorkshire, and traverses Dur- 



* From wlieiice tl)e fiist information came, of liic imconf'ormuhlcness of 

 the yellow Limestone and this Fand, as mentioned p. 167 and 174 of 

 vol. xlv. : of which curious facts, I hr.ve since had tlic ()[)p()rtunity of fully 

 satisfying.' my-elf, hy an examination and niappiuL' >)f part of tiie dibtrict; 

 and niy kind Friend Mr. James Porter, has undertaken to soon complete this 

 Map, and send it up for publication : it will establibh the facts mentioned, 

 beyoud all controversy, 



ham. 



