An Accurate table, ascertaining the progressive depreciation of the paper-currency, in the province of South-Carolina, during the late usurpation : with a comprehensive digest of the proofs and evidences, laid before the commissioners appointed for that purpose, by the Honourable James Simpson, Esquire, intendant-general of the police in the said province, whereon the said table is founded : To which are subjoined, a few brief observations, tending to elucidate so intricate a subject