in the Vicinilj/ of Li/me Regis, Dorset, and Beer, Devon. 113 



scales of fish, the spines of Echinites, and a quantity of broken shells, among 

 which, pieces of Pectens and Oysters are distinguishable. To this succeeds a 

 very compact and yellowish-brown siliceous sandstone with regular chert-seams, 

 which are in general several inches thick, and afford very fine specimens of chal- 

 cedony. In this sandstone, organic remains are by no means well preserved; 

 on the contrary, the shells most frequently occur much broken, the fragments 

 being arranged in layers parallel to tlie chert-seams. The Chama digitata, 

 Sowerby, (Min. Con. T. 174.) is not an uncommon fossil in this division; and 

 the Spatangus ornatus, Defr. (Env. de Paris, PI. V. fig. 6.) is to be found in 

 the chert. The whole of this division is from 70 to 80 feet in thickness, and 

 can be well studied in Ware Cliffs, the western side of Pinhay, at Whitelands, 

 Charlton, and Dowlands. 



Yellowish-brown sand (Fox mould). — This division is about 70 or 80 feet 

 thick, and consists principally of a yellowish-brown sand of various shades 

 of colour, acquiring, however, green-earth as it approaches the next-men- 

 tioned division, into which it seems to pass. This sand can be best studied 

 at the fine section obtained at the new road between Lyme Regis and Char- 

 mouth, where a deep cut has been made in it at the top of Black Ven. Or- 

 ganic remains are extremely rare in it^ a few scattered fragments only of 

 shells having been yet discovered ; in this respect, it differs very widely from 

 the next division. 



Sand and Sandstone containing an abundance of green-earth. — This in fact 

 may be fairly called a Green-sand, being almost wholly of that colour, and is 

 principally composed of a mixture of green-earth and siliceous sand. It 

 abounds in organic remains, contains indurated nodules and seams (commonly 

 called Cow Stones) in its lower part, and is about 40 or 50 feet in thickness. 

 Some portions of this green-sand, when exposed to wet, have rather a clayey 

 character, and the indurated nodules sometimes contain mica, and thin veins 

 of calcareous spar. 



The organic remains, which are in general well preserved, and sometimes 

 converted into chalcedony, are as follows : 



Impressions of Ferns. 



Crustacea*. 



Pieces of a bony substance. 



Alcyon 



la. 



* The most common fossil of this kind presents us with several points of resemblance to the 

 genus Astacus. It measures generally from 4 to 6 inches in length, not including the claws, and 

 has as yet been only found in the indurated portions, or Cow Stones. 

 VOL. II. SECOND SERIES. Q 



