Letter from the secretary of state : inclosing abstracts of all the returns made to him by the collectors of the different ports, of registered and impressed seamen; together with a report exhibiting abstracts of the communications received by him, from the agents employed by virtue of the "Act to revive and continue in force certain parts of the act for the relief and protection of American seamen," and to amend the same;" made in pursuance of the said act. : 10th December, 1799, ordered, to lie on the table.