Whenever any officer having the power of appointment or employment
shall so request, there shall be certified to him by the Commission or
the proper examining board four names for the vacancy specified, to be
taken from those graded highest on the proper register of those in his
branch of the service and remaining eligible, regard being had to the
apportionment of appointments to States and Territories; and from the
said four a selection shall be made for the vacancy.

2. These certifications for the service at Washington shall be made
in such order as to apportion, as nearly as may be practicable, the
original appointments thereto among the States and Territories and the
District of Columbia upon the basis of population as ascertained at the
last preceding census.

3. In case the request for any such certification or any law or
regulation shall call for those of either sex, the four highest of that
sex shall be certified; otherwise sex shall be disregarded in such
certification.

4. No person upon any register shall be certified more than four
times to the same officer in the customs or postal service or more
than twice to any Department at Washington, unless upon request of the
appointing officer; nor shall anyone remain eligible more than one year
upon any register. No person while remaining eligible on any register
shall be admitted to a new examination, and no person having failed
upon any examination shall within six months thereafter be admitted
to another examination without the consent of the Commission; but
these restrictions shall not extend to examinations under clause 5
of Rule VII.

RULE XVIII.

Every head of a Department or office shall notify the Commission of the
name of every person appointed to or employed in the classified service
under him (giving the date of the appointment and the designation of the
office or place) from those examined under the Commission, and shall
also inform the Commission of the date of any rejection or final
appointment or employment of any probationer, and of the promotion,
removal, discharge, resignation, transfer, or death of any such person
after probation. Every head of an office in the postal or customs
service shall give such information on these subjects to the board of
examiners for his office as the regulations of the Commission may
provide for.

RULE XIX.

There are excepted from examination the following: (1) The confidential
clerk or secretary of any