Stratification of the Limestone District of Derby shire. 123 



beds ranging nearly parallel to the above basset at short di- 

 stances to the west of it. 



Let us first consider the two latter bassets, i. e. those of his 

 first and second toadstones. He asserts that they commence 

 on the north at the great fault (which he assumes to run N. 

 and S. between Castleton and Litton,) not far from Wind- 

 mill Houses, the first passing near the village of Litton and 

 the second near Tideswell. Now of the existence of a toad- 

 stone basset anywhere to the north of Litton, where these 

 are said to commence, I have not been able to find the most 

 remote indication, either in my own examination of the spot, 

 or in the information 1 have derived from the most intelligent 

 miners in the neighbourhood ; and moreover I can myself 

 bear positive testimony to the fact that the toadstone near 

 Tideswell, which Farey asserts to belong to the second bed, 

 belongs to the same as that at Litton, which he has assigned 

 to the Jirst, for I have most distinctly traced the toadstone 

 without the smallest interruption from the one place to the 

 other. It is manifestly brought up by the E. and W. fault 

 which has elevated Litton Edge. 



Again, (if I understand him rightly, which is sometimes no 

 easy matter, even with the aid of his able commentator*,) 

 Farey says, that the first basset passes nearly at the southern 

 extremity of Crossbrook Dale, and from thence to Fin Copt 

 Hill; and that the second passes from near Tideswell to the 

 southern extremity of Tideswell Dale next the Wye, ranging 

 thence easterly along the sides of Miller's Dale and Monsal 

 Dale till it descends to the level of the river Wye, at the 

 mouth of Crossbrook Dale, and that crossing the river at that 

 point, it returns westerly along the opposite side of the valley 

 to the top of Priestcliff Lowe. 



Now, in the first place, I deny the possibility of tracing any 

 continuous basset from Litton to the south end of Crossbrook 

 Dale, or from the point where the toadstone appears north of 

 Tideswell to the southern extremity of Tideswell Dale; nor is 

 there the slightest indication in either case of any faults by 

 which the bassets between those places respectively might be 

 hidden. In the second place, the toadstone which appears in 

 the southern part of Crossbrook Dale is not the western ex- 

 tremity or basset of the bed to which it belongs, for nothing 

 can be more manifest than that the bed passes across the 

 dale, of which for some distance it occupies the whole of the 

 lower part, ascending in exactly a similar manner on both 



* See "Geology of England and Wales," in which Mr. Conybeare has 

 given an exposition of Farey 's views far more intelligible than that which 

 Farey himself has given of them. 



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