We have the honour to enclose an extract of a letter from the Commissioners of the United States of America to Your Excellency dated Aug st. 28 th. 1778. Copy of Your Excellency’s ans r dated 27. Sept r. 1778. & Copy of M. de Sartine’s letter to Your Excellency of the 21 st of Sept r. 1778 all relative to a proposed negotiation with the States of Barbary. Not having any particular authority or...