1.  There shall be open competitive examinations for testing the fitness of applicants for admission to the service.  Such examinations shall be practical in their character, and so far as may be shall relate to those matters which will fairly test the relative capacity and fitness of the persons examined to discharge the duties of the branch of the service which they seek to enter.

2.  And for the purpose of establishing in the classified service the principle of compulsory competitive examination for promotion there shall be, so far as practicable and useful, such examinations of a suitable character to test the fitness of persons for promotion in the service, and the Commission may make regulations applying them to any classified Department, customs office, or post-office, under which regulations examinations for promotion shall be conducted and all promotions made; but until regulations made by the Commission in accordance herewith have been applied to a classified Department, customs office, or post-office, promotions therein may be made upon any test of fitness determined upon by the promoting officer.  And in any classified Department, customs office, or post-office in which promotions are made under examinations as herein provided the Commission may, in special session, if the exigencies of the service require such action, provide noncompetitive examinations for promotion.

  RULE XIX.

There are excepted from examination the following:  (1) The confidential clerk or secretary of any head of a Department or office; (2) cashiers of collectors; (3) cashiers of postmasters; (4) superintendents of money-order divisions in post-offices; (5) the direct custodians of money for whose fidelity another officer is under official bond, and disbursing officers having the custody of money, who give bonds; but these exceptions shall not extend to any official below the grade of assistant cashier or teller; (6) persons employed exclusively in the secret service of the Government, or as translators or interpreters or stenographers; (7) persons whose employment is exclusively professional, but medical examiners are not included among such persons; (8) chief clerks, deputy collectors, deputy naval officers, deputy surveyors of customs, and superintendents or chiefs of divisions or bureaus.  But no person so excepted shall be either transferred, appointed, or promoted, unless to some excepted place, without an examination under the Commission, which examination shall not take place within six months after entering the service.

  RULE XXI.