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 three 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. And no person while remaining eligible on any register shall be admitted to a new examination of the same grade.
RULE XVII.
1. Every original appointment or employment in said classified service shall be for the probationary period of six months, at the end of which time, if the conduct and capacity of the person appointed have been found satisfactory, the probationer shall be absolutely appointed or employed, but otherwise be deemed out of the service.
2. Every officer under whom any probationer shall serve during any part of the probation provided for by these rules shall carefully observe the quality and value of the service rendered by such probationer, and shall report to the proper appointing officer, in writing, the facts observed by him, showing the character and qualifications of such probationer and of the service performed by him; and such reports shall be preserved on file.
3. Every false statement knowingly made by any person in his application for examination and every connivance by him at any false statement made in any certificate which may accompany his application shall be regarded as good cause for the removal or discharge of such person during his probation.
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.
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, 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; (8) chief clerks, superintendents, and 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. Promotions may be made without examinations in offices where examinations for promotion are not now held until rules on the subject shall be promulgated.