Advice is received from Gibr;iltar, that one of his Majesty's ships of war, belonging to Admiral Man's squadron, has chased five American vessels into the Bay of Cadiz. The Captain of the man of war immediately waited on the commander in chief at that port, who informed him, that if he would put to sea immediately, the Americans should not land their cargoes, but quit the place in. 24 hours. The man of war left the port directly, and cruizing off the mouth of the Bay 'till the above vessels (which were forced to put to sea) came out, which they made prizes of and.carried into Gibraltar.