TO HIS EXCELLENCY WASHINGTON HUNT, 
Governor of the State of New-York. 
SIR, 
I herewith submit to Your Excellency that part of my Report on the 
Palaeontology of New-York, containing descriptions of the organic 
remains from the lower part of the middle division of the System, 
embracing those of the Medina sandstone, Clinton group, Niagara 
group, Coralline limestone, and Onondaga-salt group. All the species 
described are illustrated by figures drawn and engraved from original 
specimens, the geological positions of which are well authenticated. 
I have the honor to be, 
With great respect, 
Your obedient servant. 
Albany, September 1, 1852. 
JAMES HALL. 
