of the Treasury, and to each of the Auditors, and to each of the Comptrollers in the Treasury, and to the Treasurer, and to the Register of the Treasury, a full and complete list, duly certified, of all the persons who have been nominated to and rejected by the Senate during such session, and a like list of all the offices to which nominations have been made and not confirmed and filled at such session. Sec. 1775, R. S.

12. Details of clerks to Executive Office.-Employees of the Executive Departments and other establishments of the executive branch of the Government may be detailed from time to time to the office of the President of the United States, for such temporary assistance as may be necessary. Act of June 22, 1907 (34 Stat. 401).

13. Temporary head of department.-In case of the death, resignation, absence, or sickness of the head of any Department, the first or sole assistant thereof shall, unless otherwise directed by the President, as provided by section one hundred and seventy-nine,1 perform the duties of such head until a successor is appointed, or such absence or sickness shall cease. Sec. 177, R. S.

14. Temporary chief of bureau.-In case of the death, resignation, absence, or sickness of the chief of any Bureau, or of any officer thereof, whose appointment is not vested in the head of the Department, the assistant or deputy of such chief or of such officer, or if there be none, then the chief clerk of such Bureau, shall, unless otherwise directed by the President, as provided by section one hundred and seventy-nine, perform the duties of such chief or of such officer until a successor is appointed or such absence or sickness shall cease. Sec. 178, R. S.

15. Same-Designation by President.-In any of the cases mentioned in the two preceding sections, except the death, resignation, absence, or sickness of the Attorney-General, the President may, in his discretion, authorize and direct the head of any other Department or any other officer in either Department whose appointment is vested in the President, by and with the advice and consent of the Senate, to perform the duties of the vacant office until a successor is appointed, or the sickness or absence of the incumbent shall cease. Sec. 179, R. S.

16. Restriction on temporary appointments.-A vacancy occasioned by death or resignation must not be temporarily filled under the three preceding sections for a longer period than thirty days. Sec. 180, R. S., as amended by Act of Feb. 6, 1891 (26 Stat. 733).

17. Same. No temporary appointment, designation, or assignment of one officer to perform the duties of another, in the cases covered by sections one hundred and seventy-seven and one hundred and seventy-eight, shall be made otherwise than as provided by those sections, except to fill a vacancy happening during a recess of the Senate. Sec. 181, R. S.

18. Same-Extra compensation not allowed.-An officer performing the duties of another office, during a vacancy, as authorized by sections one hundred and seventy-seven, one hundred and seventyeight [Rev. Stat.], and one hundred and seventy-nine [id.], is not by reason thereof entitled to any other compensation than that attached to his proper office. Sec. 182, R. S.

3

Sections 177 and 178, Revised Statutes, paragraphs 13 and 14, ante. The vacancy occasioned by the retirement of the head of a staff department may be temporarily filled by an ad interim appointment, under the authority conferred by section 179, Revised Statutes. (XIX Opin. Att. Gen., 500.) Sections 177 and 178, Revised Statutes, paragraphs 13 and 14, ante.

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