Section 55
SEC. 55. Postmasters shall lie deemed disbursing officers and shall be authorized to pay. under proper advance allowances or authority of the Director of Posts, subject to such regulations as the Auditor may require, the expenses of their respective offices, including salary of postmaster, necessary disbursements for clerk hire, rent, light, and other incidental items, including authorized mail transportation and other necessary service, from the receipts of their respective offices. The postmaster shall render correct vouchers for every such expenditure, such vouchers to indicate on the face thereof the . date such allowances were made by the Director of Posts, which vouchers shall be submitted to the Auditor with the account-current in which credit therefor is taken. No disbursement shall be allowed by the Auditor in the account of any postmaster which is not in accordance with an appropriation.