GEOLOGY OF THE FOURTH DISTRICT. 



ORGANIC REMAINS OF THE NIAGARA GROUP. 



No. 23. — No. 42, page 115. 

 Fig. 1 . Gorgonia ? reteformis, II. Lockport. 

 Fig. 2. Gorgonia ? ? 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 Ms. Lockport. 



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