82 



possess. The Genus Spirula is perhaps the nearest 

 approach among recent shells to such a form as this lossil 

 might possibly have had when perfect : in the present 

 state of our knowledge of its form, however, it would 

 seem to be a rather bold assertion to declare them of the 

 same Genus. 



The specimen is a cast in Mountain Limestone filled 

 with Calcareous Spar, found in Ireland, and presented in 

 1819 by Dr. Ogilby, and is augmented in value by his 

 disinterested kindness. 



