Section 15
SEC. 15. In case of the temporary absence or disability of the chief of any Bureau or Officer. or in case of a vacancy in such position. any officer or employee in such Bureau or Office may be designated by the Governor-General or proper head of Department temporarily to perform the duties of such chief of Bureau.or Office without additional compensation unless there is a vacancy in the position or the chief is absent from duty without pay and unless the order designating such person shall provide additional compensation, in which latter case the person designated shall receive the compensation provided in said order, not exceeding the salary authorized by law for said position. In case of the temporary absence or disability of any subordinate officer or employee in any Bureau or Office, the chief of such Bureau or Office may designate any other subordinate officer or employee in bis Bureau or Office temporarily to perform the duties of the officer or employee who is thus absent or disabled, and it shall be the duty of the person so designated to perform the duties so assigned to him without additional compensation. Whenever any officer or employee shall be designated by proper authority for the temporary performance of the duties of chief or of any subordinate officer or employee of a Bureau or Office, the person so designated shall be reimbursed for any additional expense which he is obliged to incur on account of a bond premium in the position to which he has been so designated, and such reimbursement shall bo made from the appropriation for the Department, Bureau, or Office in which the services are rendered by reason of such designation: Provided, That no reimbursement shall be made to persons receiving the full compensation attached jo tin: position the duties of which they are designated to perform as herein set forth.