The names of these parties, like those of their predecessors in older countries, have from time to time been changed, from suggestions of policy or from accidental causes. Men of similar and substantially unchanged views and principles have, at different periods of English history, been distinguished as Cavaliers or Roundheads, as Jacobites or Puritans and Presbyterians, as Whigs or Tories. Here, with corresponding consistency in principle, the same men have at different periods been known as Federalists, Federal Republicans, and Whigs, or as Anti-Federalists, Republicans, and Democrats. But no changes of name have indicated--certainly not until very recently, and the depth and duration of the exception remain to be seen--a change or material modification of the true character and principles of the parties themselves. The difference between the old Republican and the Anti-Federal parties, arising out of the questions in regard to the new Constitution, was by far the greatest variation that has occurred. Several hasty and but slightly considered attempts have been made to define the origin, and to mark the progress, of our national parties. But, with a single exception,--namely, that made by ex-President John Quincy Adams, in his Jubilee Discourse before the New York Historical Society, on the 30th of April, 1839, being the Fiftieth Anniversary of the Inauguration of George Washington as President of the United States,--they have not professed, so far as they have fallen under my notice, to do more than glance at the subject.