586 Correspondence. — Mr. W. Sanders. 



aerial or submarine deposit of prior age to the higher Limestones in 

 the series, which elsewhere rest upon this bed. 



I may mention that I possess some exceedingly beautiful speci- 

 mens of miniature basaltic-like columns in common brick- clay, that 

 were picked up by a friend in a field where clay had been burnt for 

 agricultural purposes. These resemble very closely the columnar 

 clay in the Tideswell quarry. 



In reference to another subject, I may remark that in going 

 to and from the quarry in question, I passed, on each occasion, 

 through that part of Millers Dale where the Eev. T. Gr. Bonney 

 (see Geological Magazine, Vol. VII., p. 267) says he found 

 apparent burrowings in Limestone. I sought carefully for these 

 hollowed Limestones, but found none ; and I am driven to the 

 belief that Mr. Bonney, in his hurried visit, mistook a bed of Toad- 

 stone — a trap -bed much lower in the series than the one above 

 mentioned and which runs along the valley at the road-level for a 

 great distance — for Limestone, and that the vesicular cavities which 

 abound therein were mistaken for the borings of animals. This 

 error could of course only have arisen from a very hasty examina- 

 tion of the locality. 



Btjkton-on-tbent, 14 iVoi?., 1870. Edwin Bbown, F.Gr.S. 



BURIED SEA-CLIFFS v. FAULTS. 



Sib, — In your number for April, at page 192, is a paragraph 

 headed " Buried Sea-cliffs versus Faults." This met a reply by Mr. 

 H. B. Woodward in the Magazine for May, with whose remarks I 

 fully concur. I wish to add, that in the year 1846, at the Meeting of 

 the British Association at Southampton, I showed a section of the 

 railway between Bristol and Taunton. At four places the sections 

 were enlarged, one of which represented, on the scale of 40 feet to the 

 inch, the Uphill cutting. An abstract of my communication appears 

 at page 59 of " Eeports of Sections," vol. for 1846, and in it occurs 

 the following paragraph : — " At the Uphill section, not only are 

 violent dislocations of the Ked Marls and Lias produced, so that 

 the Lias-beds dip at an angle of 70° or more towards the plane of 

 intersection between the Lias and the Limestone, which plane itself 

 dips in the same direction, but in addition, the igneous rock appears 

 in full force ; and it clearly bears relation, not only to the fault 

 which brings into juxtaposition the Limestone and Lias, but to an 

 extensive fault in the Limestone itself, by which the whole series 

 of beds on one side differs from that on the other." 



My principal object in writing this is to state that these sections 

 were deposited in the Jermyn Street Museum, and may be seen on 

 application. An examination of the Uphill cutting will satisfy any 

 person that it cannot be adduced in evidence of the theory of '•' Buried 

 Sea-cliffs versus Faults." William Sanders. 



Hanbury Lodge, 



The Avenue, Clifton, Bristol. 



