Geological Arrangement of British Fossil Shells, 2 7 



ively styled formations), and a false estimate of number would 

 result from repetition, they have been arranged under those 

 formations which they more particularly characterise, where 

 they are most conspicuous, or whence they were originally 

 figured by Mr. Sowerby. The authorities for many of the 

 additional fossils are affixed. 



The present is by no means offered to geologists as a per- 

 fect Stratigraphical Table. There is still much to add, and 

 much to correct ; but should it prove the means of eliciting a 

 more elaborate classification hereafter, by those better qualified 

 for the undertaking, the object of the writer will be fully at- 

 tained. 



