'ian 



iluri 



^k 



ian rod; 



r «ffold jj 



i 



1 series ; ct 



? lintshirt 



is, Llanfa 



- Grassinf 



t beds of t; 



)uilding si 

 set. 



tubes. Fre 

 stone. 



C 



Carbonip 



re 



0\ At 



trict in f 



rset. 



casts 



of W 





*> 





'Hi. * 



SANDSTONES. 



47 



65. 



Keuper, slightly micaceous, and con- Upper 

 s, from the white beds of the New Bed Ga ™ y - 



"Wall-case 41 



Sandstone. — Bell Broughton, Worcestershire. 



66. — Silurian sandstone, upper Llandovery Roch, or 

 May-Rill Sandstone, containing numerous casts of fossils. 

 {Pentamerus oblongus, fyc.) — Norbury, Salop. 



61 



Old red sandstone, ( 



Mitcheldean, 



Gloucestershire. 



68. — Old red sandstone, with laminae of mica, which 



cause it to split into thin layers. — Mitcheldean, Gloucester- 

 shire. 



69. 



Cambrian grit, grains of clear quartz in a base 



partly felspathic. — Hills east of Harlech, Merionethsh 



70. — Old red sandstone, slightly micaceous, and con 

 taining fragments of plant roots. 



Hills 



71. 



Wealden, (shewing 



and false lamination). See map 10, and horizontal section 



No 



72. 



tamerus beds. 



Point, Isle of 



Q 



Pen- 



This 



belongs to the same set of beds as 66 and 25. They show 



how, in a few miles, the same rock may change in character. 



73. — Grit, altered Cambrian The Burgs, Shrewsbury, 



Salop. 



. 74. ,_ 



ing).— Rhyader, Radnorshire. 



(used 



75 



Pennant grit, Coal Measure sandstone, containing 

 micaceous laminae. — Forest of Dean, Gloucestershire. 



76. — Variegated red and white coal measure sandstone, 

 from beds immediately underlying greenstone.— Salisbury 



Crags, Edinburgh. 



Rock 



77. — Variegated old red sandstone. 

 house, Scotland. 



78.— Lias sandstone, (bottom bed) 



Glamorganshire. 



79.— Sandstone, slightly micaceous and flaggy. Lias 

 bone-bed. (Sir H. De la Beche's < 



Pen arch 



Memo 



on 



W 



