153 



'identified as the true equivalent of the Calcaire a Polypiers at 

 Caen, in Normandy. At Mincliinhampton Common, the Great 

 OoHte contains chiefly MoUusca; the Coral beds belonging to 

 a higher portion of the formation are absent in this locality. 

 The Great Oolite near Bath contains several Corals which are 

 figured in MM. Edwards and Haime's Monograph; some large 

 masses of Calamophyllia radiata, several feet in diameter, are 

 very conspicuous; associated with the Corals are the roots, 

 stems, and heads of Apiocrinites rotundus, Mill., which flourished 

 like a miniature forest on the reef, and luxuriated among the 

 Polyps for ages, until the clear still water was invaded by a 

 current charged with mud, which destroyed the Pear Encrinites, 

 and brought the life of the Polypifera to a termination. It is 

 the ruins of the sea liHes of this reef that are so miraculously 

 preserved in the Bradford Clay. I have a series of roots and 

 stems and heads from this bed, as they were thrown down in 

 the ancient lagoon and buried up with mud. 



Corals from the Great Oolite near Bath. 



Stylina conifera, Ed. and Haime, and 2 other sp. 



Cyathophora Luciensis, Ed. and Haime, and 1 other sp. 



Convexastrcea Waltoni, Ed. and Haime 



Mmtlivaltia SmitMi, Ed. and Haime 



Calamophyllia radiata, Lamorn-. i 



Cladophyllia Babeana, d'Orbig. 



Isash-cea limitata, Lamoiu-., and 3 other sp. 



Clausastrea Pratti, Ed. and Haime 



Thamnastrcea mammosa, Ed. and Haime, and 3 other sp. 



Anabacia orhulites, Lamour. 



Comoseris vermicularis, McCoy 



Microsolena excelsa, Ed. and Haime 

 All the species in the above list are distinct from those of 

 the Inferior Oolite. 



The Forest Marble near Fairford, a few years ago was found 

 to contain a very rich bed of Corals, from whence numerous 

 specimens were obtained. Many of these are now in the British 

 Museum, the School of Mines, and Museum at Gloucester. 



