Transactions of the American Philosophical Society . ?, ? Hj |. TRANSACTIONS AMERICAN PHILOSOPHICAL SOCIETY. NEW SERIES. No. I. Observations on the Geology of the United States of NorthAmerica; with Remarks on the probable Effects that may beproduced by the Decomposition of the different Classes ofRocks on the Nature and Fertility of Soils: applied to thedifferent States of the Union, agreeably to the accompanyinggeological Map. With two Copper Plates. By WilliamMaclure.—Read May iGth, 1817.* PRELIMINARY OBSERVATIONS. ALL inquiry into the nature and properties of rocks, orthe relative situatio
Transactions of the American Philosophical Society . ?, ? Hj |. TRANSACTIONS AMERICAN PHILOSOPHICAL SOCIETY. NEW SERIES. No. I. Observations on the Geology of the United States of NorthAmerica; with Remarks on the probable Effects that may beproduced by the Decomposition of the different Classes ofRocks on the Nature and Fertility of Soils: applied to thedifferent States of the Union, agreeably to the accompanyinggeological Map. With two Copper Plates. By WilliamMaclure.—Read May iGth, 1817.* PRELIMINARY OBSERVATIONS. ALL inquiry into the nature and properties of rocks, orthe relative situations they occupy on the surface of the earth,has been much neglected. It is only since a few years that * Report.—The committee to whom has been referred Mr. MarluresObservations on the Geology of the United States, beg leave to report: They are fully aware that a former edition of this gentlemans observa-tions on the geology of our country, has already been published in the lastvolume of the memoirs of this Society. Since that period, Mr. Maclure hasvisite
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