GEOLOGY OF THE FOURTH DISTRICT. 
ORGANIC REMAINS OF THE NIAGARA GROUP. 
No. 23. — No. 42, page 115. 
Fig. 1. Gorgonial reteformis, H. Lockport. 
Fig. 2. Gorgonia 1 - 1 These two are fossils in the shale at Lockport. 
No. 24. —No. 43, page 116. 
Fig. 1. -? This fossil, though very beautiful in its appearance, is obscure, and for want 
of time has not been decided. Lockport. 
Figs. 2 and 3. A coral resembling Isis. Lockport, 
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