264 Mr Manteirs Remarhs on the Strata 



of the oolitic formations ; in short, that they are tertiary, and not 

 secondary deposits."" What the considerations may be that can 

 lead to such a conclusion I cannot possibly conceive, and shall 

 not therefore occupy the valuable pages of this Journal with use- 

 less conjectures ; but as my sole object, in these remarks, is the 

 establishment of what I conceive to be the truth, I shall feel 

 obliged, if the writer still entertains a doubt on the subject, by 

 the statement of his objections to what I have advanced. 



In the present infancy of geology, if a person discover, in cei- 

 tain formations, remains of animals and vegetables, of classes or 

 orders, which, according to received theories, we might not ex- 

 pect could be found in such deposits, we ought not, on that ac- 

 count only, to doubt the accuracy of his investigations, or the 

 truth of his assertions. 



In the comparative Hst of the organic remains of Stonesfield 

 and Tilgate, inserted in the Memoir on the Megalosaurus, it 

 was the object of Dr Buckland to mark their general resem- 

 blance only. It may not, therefore, be uninteresting to give a more 

 extended catalogue, since the difference, as well as resemblance 

 of the fossils of the two deposits, will thus be placed in a more 

 striking point of view. 



Organic Remains of' 



The Limestone Schist of Stonesfield and Tlw Sandstone of Tilgate Forest. 



Megalosaurus, teeth, vertebrae, and Megalosaurus— -teeth, vertebrae, and 

 other bones. other bones. 



Crocodile. Crocodile — teeth, vertebrae, &c. teeth 



more obtuse and large than those of 

 Stonesfield. 



Plesiosaurus. Plesiosaurus— teeth and vertebrae ; 



species unknown. 



Didelphis. Iquanodon ^ teeth, vertebrae, and 



Elytra of insects. other bones ; hitherto not found else- 



where. 



Birds— tibiae, and other bones. Birds—tibiae somewhat resembling 



those of Stonesfield. 



Whale?? Whale?? the supposed humeri are 



probably of Plesiosauri. 



Balista— species o£ Balistae— spines of. 



Turtles — scales and bones j species un- Turtles— 3 genera ; a fresh- water, ma- 

 pertain, rine, and terrestrial ? 



