5.  Applicants certified as otherwise qualified for appointment as cashiers of collectors of customs, cashiers of assistant treasurers, cashiers of postmasters, superintendents of money-order divisions in post-offices, and such other custodians of large sums of money as may hereafter be designated by the Advisory Board, and for whose pecuniary fidelity another officer is responsible, shall, nevertheless, not be appointed except with the approval of such other officer.

6.  Postmasters whose annual salary is less than $200 may be appointed upon the written request of applicants, with such evidence of character and fitness as shall be satisfactory to the head of the Department.

7.  The appointment of all persons entering the civil service in accordance with these regulations, excepting persons appointed by the President by and with the advice and consent of the Senate, postmasters, and persons appointed to any position in a foreign country, shall be made for a probationary term of six months, during which the conduct and capacity of such persons shall be tested; and if at the end of said probationary term satisfactory proofs of their fitness shall have been furnished by the board of examiners to the head of the Department in which they shall have been employed during said term, they shall be reappointed.

8.  The President will designate three persons in each Department of the public service to serve as a board of examiners, which, under the supervision of the Advisory Board and under regulations to be prescribed by it, and at such times and places as it may determine, shall conduct, personally or by persons approved by the Advisory Board, all investigations and examinations for admission into said Departments or for promotion therein.

9.  Any person who, after long and faithful service in a Department, shall be incapacitated by mental or bodily infirmity for the efficient discharge of the duties of his position may be appointed by the head of the Department, at his discretion, to a position of less responsibility in the same Department.

10.  Nothing in these rules shall prevent the appointment of aliens to positions in the consular service which by reason of small compensation or of other sufficient cause are, in the judgment of the appointing power, necessarily so filled, nor the appointment of such persons within the United States as are indispensable to a proper discharge of the duties of certain positions, but who may not be familiar with the English language or legally capable of naturalization.

11.  No head of a Department nor any subordinate officer of the Government shall, as such officer, authorize or permit or assist in levying any assessment of money for political purposes, under the form of voluntary contributions or otherwise, upon any person employed under his control, nor shall any such person pay any money so assessed.

12.  The Advisory Board shall at any time recommend to the President such changes in these rules as it may consider necessary to secure the greater efficiency of the civil service.