s, to be nominated one each by the
collector, the naval officer, and the surveyor: _Provided, however_,
That in examinations for positions in the surveyor's office the
surveyor's alternate shall act on such board. The examining boards in
the offices of the assistant treasurer and the appraiser shall consist
of three persons, with three alternates, to be nominated by the
assistant treasurer and the appraiser, respectively. All nominations
as members and alternates on the examining boards shall be submitted
to the Secretary of the Treasury for his approval. The heads of the
several offices shall constitute a board of revision and appeal,
which, upon appeal from any person examined or from any member of an
examining board, shall revise the decision of said board.

XIV. Whenever the head of an office shall notify the board of
examiners for such office that a vacancy which he desires to fill
exists in any grade above the lowest not excepted from the rules
and regulations for the civil service, the board will fix a time for
holding an examination for the purpose, and at least five days before
the same is to take place will cause a notice to be posted in a
conspicuous place in the office, stating the grade and group of the
vacancy, the date of the examination, and that the vacancy is to be
filled by a competitive examination of applicants from the next lower
grade, unless none in such lower grade be found qualified, when those
in the next lower grade may compete, or, if there be none in any of
the lower grades qualified, competition will be open to applicants. In
any examination for promotion, if the competitors from the next
lower grade shall not exceed three in number, the board may, at its
discretion, open the competition to the next lower grade or below, as
they may deem best; and furthermore, if such promotion would probably
occasion vacancies requiring other promotions, the board may combine
in one the necessary examinations for such promotions. No person who
has been examined in any grade for promotion and failed to receive
such promotion shall again be admitted to examination within six
months, but in the meantime his general average, as ascertained by
such examination, may be brought into competition, as provided in
Regulation XI.

XV. The examination will be held upon the general subjects fixed for
examinations for admission to the lowest grade of the group and upon
such other subjects as the general nature of the