Last night Capt. [John] Souder arrived here from Grenada. On his passage he spoke a vessel from Cork, the master of which informed him, that twenty-five transports, with four thousand troops on board, had sailed from Cork for America. Capt. Souder says, that before he left Grenada a London paper arrived there, of the thirtieth of November, in which was a list of the thirty-nine Commissioners appointed to Treat with Congress, among whom were Lord [Richard] Howe and Governor Johnson [George Johnstone].