BALTIMORE, March 12.Ext raff of a letter j)om an officer on boardthe United States bng Augujiay to a gentleman in this city 3 datedOff Porio Rico, Jan. 24, j8oo.“ After compleating our water, and replacing our foretopmaft with a new one, we proceeded^rff this place according to the orders of commodore Talbot, who commands on this ftarion, andgenerally lies off the Cape. Nothing material occurred, (having fallen in with nothing but Americans, Danes, See.) till the night of the 2 lit init. law a fail on our weather beam ; we immediately gave chafe, but they with (Veepsgot out of gun fhot, it being almoft calm. However we kept her in fight till the next morning, and then fpring-ing up a frnart breeze, we purfued her fo clofe that a: 9 a. m. the United States fhip Herald being to leeward, (he (truck. She proved to be the French privateer fchooner Mutine, of 4 twelve-pounders and 2 four's, manned with £5men. By this capture I hope we have fa-ved feme of our defenfeiefs countrymen, as (he had been our but 12 hours intending to cruife 3 months, in which time had the not been intercepted the would undoubtedly have done a great deal of damage to our commerce. We underlain! there are feveral others in Porto Rico, which we keep pretty well blockaded—but they will flip out in the night. We brought to a brig two days ago, from Philadelphia who informed us of the death of our worthy beloved Washington;/'