l Executive Departments, the commissions, and offices
in the District of Columbia.

The railway mail service.

The Indian service.

The several pension agencies.

The steamboat-inspection service.

The marine-hospital service.

The light-house service.

The life-saving service.

The several mints and assay offices.

The revenue-cutter service.

The force employed under custodians of public buildings.

The several subtreasuries.

The engineer department at large.

(_b_) All executive officers and employees outside of the District
of Columbia not covered in (_a_), of whatever designation, whether
compensated by a fixed salary or otherwise--

Who are serving in a clerical capacity or whose duties are in whole or
in part of a clerical nature.

Who are serving in the capacity of watchman or messenger.

Who are serving in the capacity of physician, hospital steward, nurse,
or whose duties are of a medical nature.

Who are serving in the capacity of draftsman, civil engineer, steam
engineer, electrical engineer, computer, or fireman.

Who are in the service of the Supervising Architect's Office in the
capacity of superintendent of construction, superintendent of repair,
or foreman.

Who are in the service of the Treasury Department in any capacity
except those in the life-saving service.

3. The custom-house service shall include the officers and employees
serving in any customs district whose employees number as many as five
who have been or may hereafter be classified under the civil-service
act; and whenever in any customs district whose officers and employees
number less than five the number of officers and employees shall be
increased to as many as five the Secretary of the Treasury shall at once
notify the Commission of such increase and the officers and employees in
said district shall be included within the classified service from the
date of said increase.

4. The post-office service shall include the officers and employees
in any free-delivery post-office who have been or may hereafter be
classified under the civil-service act; and whenever the free-delivery
system shall be established in any post-office the Postmaster-General
shall at once notify the Commission of such establishment and the
officers or employees of said office shall be included withi