THE 
QUARTERLY JOURNAL 
OF 
THE GHOLOGICAL SOCIETY OF LONDON. 
PROCEEDINGS 
OF 
THE GEOLOGICAL SOCIETY. 
DECEMBER 1, 1847. 
Samuel Hughes, Esq., George H. Sanders, Esq., Richard Meeson, 
Esq., John F. Bateman, Esq., Alfred Robertson, Esq., and John R. 
Lingard, Esq., were elected Fellows of the Society. 
The following communication was then read :— 
Report on the Fossil Remains of Mollusca from the Paleozoic For- 
mations of the UniTED STATES contained in the Collection of 
Cuarues Lye, Esa.; with Remarks on the Comparison of the 
North American Formations with those of Europe. By DANIEL 
SHARPE, Esq., F.G.S. 
THE following remarks have grown out of the examination of the 
fossil Mollusca from the older rocks of the United States, which 
Mr. Lyell has had the kindness to entrust to me. My principal ob- 
ject has been to ascertain what species are common to the American 
and European formations ; how far such species have had the same 
duration in the two continents ; and how far similar forms of animals 
have existed in both at what may be supposed to have been the same 
periods: thus collecting data illustrative of the history of the earlier 
marine animals. The next object has been to apply this knowledge 
to the classification of the American formations, and to try to learn 
how closely we are justified in comparing them with those of Europe, 
VOL. IV.— PART I. N 
