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possess. The Genus Spirula is perhaps the nearest 
approach among recent shells to such a form as this fossil 
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. 
