PART I.--_Reports and Opinions while Secretary of State._--Under this head

are included Jefferson's Reports to Congress, which have been published before; also, his Reports to the President, and his Cabinet Opinions, both of which were private, and are now for the first time given to the public. It seems to have been the practice of Washington, to take the written opinions of his Secretaries upon important points arising during his administration, and the opinions of Jefferson, here published, were given in reply to questions propounded and points submitted to him by the President, in conformity with this practice. They relate to a great variety of matters connected with the early history of our government, and the principles of interpretation to be applied to the Federal Constitution, and will be found interesting and valuable.