124 Geological Queries regarding Basaltes, Coals, &c. 



dity of its contrary dips) ? : and do not these two ranges of 

 Basalt, in reality join and form a very lengthened and irregular 

 ring? (or rings, if they join in more than two places?) ; if 

 so, where are its ends situate ? ; and if not, in what way are the 

 two ranges terminated or lost sight of, at one or both of their 

 ends ? 



Does the Basalt of the upper part of the Tees (mentioned pp. 

 73 and 74), really basset there towards the S ?,'showing its up|)er- 

 measures on the N, and its under-nieasures on the S of the Ba- 

 saltic Area?, (and in such case, does it join, and by what route, to 

 the easternmost of Mr. Buckland's ranges ? ; and can it be traced 

 the other wav under the magnesian Limestone ?); or, does it 

 dip and take cover on the S side, as well as the N ?, appearing to 

 day, in consequence of the upper or Lead-measures being ex- 

 cavated from off it ? : in the latter case, is one or more rings 

 formed, by the basalt also being locally cut through?, if so, what 

 strata (besides Hornstone or Chert, p. 74) are thereby exposed 

 to view ?. 



3rd. Are not the seven localities* of muscle-like Shells f, in 

 the Ironstones and their accompanying Shales, which Mr. Winch 



Frere, or any other Gentlemnn) for revising and freely stating tlic facts, as 

 to the interesting district which Professor Biickland has descrilied Geol. 

 Trans, iv. p. 105, (and Mr. Joseph H. Frere, Phil. Mag. 47, p. 4'i) -. and 

 particularly to say, whether the " Simdstone," left without an ascertained 

 thickness, at the bottom of p. 62 in Mr.VV.'s Paper,ineans the extended and 

 irregularly thick stratum or mass of over-lieing (and in part unconforma- 

 ble) Red Marl and its Freestone and Gypsum, mentioned by Mr. Forster 

 p. 43, and shown by Mr. Buckland ictst of both his ranges of Basalt?; or, 

 is it the defined and comparatively thin stratum, coloured red, bettocen the 

 two Basalts, and apparently, conformable to the eastern range? — the aver- 

 age and extreme visible thickness of this stratum ? : its roof and floor mea- 

 sure? live. — because, " imogimuy" Sections, and " supjwsecl relative posi- 

 tions" (p. 118), do not satisfy the (inerist, who has no knou ledge, or desire 

 to know, whether the epithets "■ old " or " new,'" should designate either 

 of these strata. 



* Tlie Querist regrets vastly, the sinallncss of this number of precise lo- 

 calities: — to similar disiippnintujents lie has often been left, re^ardin" 

 phcEnoniena elsewhere, said, in the loose and general way of conversation 

 to occur " in every Colliery," " in most places," "everywhere," " all over 

 the district," " in every parish," &c. (S:c : — all his researches into the loca- 

 lities of fossil Shells, particularly of mnscle-hke shells in the Coal districts 

 forbid however the supposition, of such belonging to many, or to slightly 

 marked parts of the series of strata: he intreats therefore the kind atten- 

 tion of Mr. W. and others, resident in or acquainted with Northumberland 

 and Durham, to multiply those localities, as much as they may be able: 

 adding, whenever they can, a reference to the particular stratum in Mr. 

 Wincii's numerous sections, in which such Shells occur. 



t Whether marine »Yj'rcsh-uatcr,\\c willingly leaves to theoretic specu- 

 lators. 



has 



