Geology. 283 
a ; : 
antiquated traditions, now, happily for science, well nigh forgotten. 
oy 
by Prof. James Hall. The genera are as follows: Euomphalus, Zaphren- 
Ta feties to the Hudson River group, is admirably shown; so that 
red sandrock is of i he Medina sandstone, and 
the age of the Oneida or the Medin: x 
ry Georgia slate, still newer, and therefore Middle dea Gar aed 
‘a; ue Wished to establish a paleontological system from the stratig 
