, he shall receive absolute
appointment; but if his conduct and capacity be not satisfactory to said
officer he shall be so notified, and this notification shall be his
discharge from the service: _Provided_, That any probationer may
be discharged during probation for misconduct or evident unfitness or
incapacity.

4. The Commissioner of Internal Revenue shall require the collector
under whom a probationer is serving to carefully observe and report
in writing upon the services rendered by and the character and
qualifications of such probationer as to punctuality, industry, habits,
ability, and adaptability. These reports shall be preserved on file in
the office of the collector, and copies thereof shall be filed with the
Commissioner of Internal Revenue for such disposition as the Secretary
of the Treasury may direct. The Civil Service Commission may prescribe
the form and manner in which these reports shall be made.

5. In case of the occurrence of a vacancy in the classified service
of any internal-revenue collection district which the public interest
requires shall be immediately filled, and there is no eligible entitled
to reinstatement under section 1, clause (_b_), of this rule or
remaining on the proper register, such vacancy, if in the class of
storekeeper, storekeeper and gauger, or clerk, may be filled without
examination and certification by a temporary designation by the
collector of the district of some suitable person to perform the duties
of the position until a regular appointment can be made under the
provisions of sections 1, 2, and 3 of this rule: _Provided_, That
service under such temporary designation shall in no case continue
longer than six months, and shall expire by limitation at the end of
that time: _And provided further_, That no person shall serve more
than six months in any one year under such temporary designation, the
year limitation in regard to such designation to begin to run on the
date thereof.

Every such temporary designation and also the discontinuance of the same
shall at once be reported to the Commission.

INTERNAL-REVENUE RULE V.

Until promotion regulations shall have been applied to a classified
internal-revenue collection district promotions therein may be made
upon any test of fitness determined upon by the Commissioner of
Internal Revenue, with the approval of the Commission: _Provided_,