APPENDIX. 



A. 



Keuper Wlarl and Sandstone and Bunter Sandstone. 



ALTHOUGH the subdivision of the Keuper or Upper Formation of the New Red System into overlying and 

 underlying marl, with a subordinate bed of sandstone, is accurately given in the section attached to the Map 

 and in PI. 29. f. 1., and is also laid down upon the Map, the details were not completely worked out when the 

 chapters on it were printed. The range and fossil contents of this thin^-bedded sandstone (surmounted by red 

 and green marls and underlaid by saliferous and gypseous marls) have since been pointed out by Mr. H. E. 

 Strickland and myself, and our memoir thereon is now printing in the Transactions of the Geological Society. 

 (See also Proceedings of the Geological Society, vol. ii. p. 563.) In that memoir we offer a number of trans- 

 verse sections in Worcestershire and Warwickshire, which not only explain the position and contents of the 

 Keuper Sandstone as subordinate to the Red Marl, but show that the whole formation is immediately under- 

 laid by light coloured and red sandstone (that of Ombersley, Bromsgrove and Warwick), which is charged with 

 peculiar plants (JSchinostachys oblongus, Brongn. and others), and with fishes' teeth, remains of Saurians, &c, 

 discovered by Dr. Lloyd of Leamington. This sandstone of Bromsgrove and Warwick is the New Red Sand- 

 stone {Bunter Sandstein) and is represented in this work by the rocks of Grinshilland Hawkstone in Shropshire. 

 The Red Sandstone and conglomerate of Coventry and Allesley with silicified coniferous wood, described by 

 Dr. Buckland, Geol. Proc, vol. ii. p. 439, and which I have recently examined, is of the same age. 



The Keuper Sandstone is not only distinguished from the subjacent red sandstones by its position in the 

 overlying marls and by its thin beds, but also by its peculiar fossils, among which are Posidonomya minuta, 

 Hybodus Keuperi, and an undescribed species of Saurian, and by not containing the plants of the Bunter 

 Sandstone. I have to correct an expression made use of at page 30, where I say that the Red Marl is never 

 inclined at a greater angle than 15° in Gloucestershire or Worcestershire ; since the early chapters were printed 

 I found, on examining the country with Mr. Strickland, that, upon the line of elevation of Inkberrow, the 

 Keuper at Walls' Farm dips 25°. (See our joint Memoir.) 



B. 



Pitchford (Bitumen, 8(C.). 



The bituminous exudations at this place have been briefly alluded to, p. 94, in describing the Shrewsbury 

 coal-field. I am informed by the Earl of Liverpool, to whom the property belongs, that the bitumen is no 

 longer collected for medicinal or other purposes. I perceive by reference to Gough's edition of Camden's 

 Britannia, that salt as well as coal works formerly existed at Pitchford, and, it is added, that they were 

 destroyed by water, (see Phil. Trans. No. 228.) I have, I trust, clearly shown that the coal measures of this 



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