Report o( U. S. Nitlon«l Muuum, i9M-M»»iU. 





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UNITEB STATES 



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Maclure'S Geological Map of the United States. 

 Reduced co m - ul orurin.i m Ttsns.oU.oii. of the American PkttOMphlort Society, Vol. vi Pt. 8, 



