The districts never cross state lines.  Sometimes a state is one district, but populous states with much business are divided into two or even three districts.  “The circuit courts sit in the several districts of each circuit successively, and the law requires that each justice of the supreme court shall sit in each district of his circuit at least once every two years.” [29] District judges are not confined to their own districts; they may upon occasion exchange districts as ministers exchange pulpits.  A district judge may, if need be, act as a circuit judge, as a major may command a regiment.  All federal judges are appointed by the president, with the consent of the Senate, to serve during good behaviour.  Each district has its district attorney, whose business is to prosecute offenders against the federal laws and to conduct civil cases in which the national government is either plaintiff or defendant.  Each district has also its marshal, who has the same functions under the federal court as the sheriff under the state court.  The procedure of the federal court usually follows that of the courts of the state in which it is sitting.

[Footnote 28:  See the second note on p.278.]

[Footnote 29:  See Wilson, The State, p. 554.  I have closely followed, though, with much abridgment, the excellent description of our federal judiciary, pp. 555-561.]

[Sidenote:  The federal jurisdiction.] The federal jurisdiction covers two classes of cases:  (1) those which come before it “because of the nature of the questions involved:  for instance, admiralty and maritime cases, navigable waters being within the exclusive jurisdiction of the federal authorities, and cases arising out of the Constitution, laws, or treaties of the United States or out of conflicting grants made by different states”; (2) those which come before it “because of the nature of the parties to the suit,” such as cases affecting the ministers of foreign powers or suits between citizens of different states.

The division of jurisdiction between the upper and lower federal courts is determined chiefly by the size and importance of the cases.  In cases where a state or a foreign minister is a party the supreme court has original jurisdiction, in other cases it has appellate jurisdiction, and “any case which involves the interpretation of the Constitution can be taken to the supreme court, however small the sum in dispute.”  If a law of any state or of the United States is decided by the supreme court to be in violation of the Constitution, it instantly becomes void and of no effect.  In this supreme exercise of jurisdiction, our highest federal tribunal is unlike any other tribunal known to history.  The supreme court is the most original of all American institutions.  It is peculiarly American, and for its exalted character and priceless services it is an institution of which Americans may well be proud.

QUESTIONS ON THE TEXT.