_Cadiz, 5th of May._ "The fleet which sailed from this port the 28th of last month, has been met in the latitude of Lagos, by a vessel which arrived yesterday. Since that time, the progress of it has not been retarded. The wind is changed, and is favorable. It is composed of twelve ships of the line, five frigates, seven privateers armed by the trade, sixtyfour transport vessels, with twelve thousand land forces, artillery, and warlike stores, and fiftynine merchant vessels, three of which are French and three American. There remain in this port fifteen ships of the line, whereof ten are ready to go to sea, the five others will be immediately. There are eight at Corunna, five frigates and one cutter, in condition to sail at the first orders. The convoy which sailed from Brest on the 14th is arrived there with the frigate, the Leocadia. We have seen come to anchor in this bay, the flag of truce, the Sartine, which brings from the Indies M. de Bellecombe, formerly governor of Pondicherry, and the other officers. This vessel being off St Vincent, had the misfortune to meet the squadron of Commodore Johnstone. He made the signals of a flag of truce, and seeking to fly, when in contempt of the law of nations, Commodore Johnstone who was in the Romney, sent him two broadsides, which killed and wounded twentyfive persons on board the Sartine. The Captain and two officers are in the number of the slain. They expected so little such an attack, that the people were all upon the tillace, and one bullet fell dead at the feet of M. de Bellecombe. Johnstone, knowing his error, or at least pretending to have been mistaken, ceased firing, and wrote a letter of excuse. One would think he should not come off so easily, and that his nation should not even content herself to disavow his conduct. "M. de Beausset set sail yesterday with his five vessels; he goes to cruise in the latitude of Lisbon, and he may very well combine himself with the seven vessels, which were to go out of Ferrol. It is believed he will return here as soon as the squadron of Toulon shall arrive." I have the honor to be, &c. JOHN ADAMS. * * * * * TO THE PRESIDENT OF CONGRESS. Paris, June 5th, 1780. Sir, The fleets of Graves and Walsingham are real objects of humor. All Europe was amused with Walsingham's squadron, and assured that it was to sail as long ago as last January or February. There has scarcely a newspaper appeared in Europe since that time but has had some article respecting it, all tending to show that it was ready, or nearly ready, to sail. This is in order to keep up the spirits of friends, and at the same time play upon the fears of enemies. The last Courier de l'Europe has the following article.