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PALEONTOLOGY: 



VOLUME III. 



CONTAINING DESCKIPTIONS AND FIGURES OF THE ORGANIC REMAINS 



OF THE LOWKR HELDERBERG GROUP AND THE ORISKANY SANDSTONE. 



1855 - 1859. 



BY JAMES HALL. 



PART II : PLATES. 



ALBANY: 



PRINTED BY C. VAN BENTHUYSEN. 



1861. 



