oJ at the time of payment. ‘When payments are made to persons other than those named in the vouchers or to the agents. of officers absent on leave, the authorities under which they are made (such as powers ‘of attorney, and letters of adminigtration) shall be registered in the Treasury and notified on the vouchers, except where the law permits of a declaration being substituted for letters of adminis- tration in cases of succession to small estates. In the case of an officer absent on leave, the amount of whose salary is paid to his agent, a certificate that the officer was alive on the date to which salary is claimed must be furnished to the Treasurer and attached to the payment voucher. When an altera- tion occurs in the amount expressed to be received, the initials of the recipient should be written against such alteration. A receipt given by an officer for money paid to him by way of imprest, or in adjust- ment of an account where he derives no personal benefit therefrom, is not, unless specially required by local law, chargeable with stamp duty. Pay- ments of subsistence and other allowances in reim- bursement of expenses actually incurred are likewise exempt. E. Classification and Control. ~ 281. When the Annual Estimates have been passed by the Legislature, and the Appropriation Law allowed by His Majesty, the expenditure of the year must be held to be definitely limited and arranged. Should any further disbursements on account of the service of that year be required, which could not have been foreseen, cannot be postponed without detriment to the public service, and cannot be met out of savings under the proper head of the Estimates, the Governor will at the earliest opportunity and, if possible, before any expenditure is incurred, submit to the T.egisla- ture an estimate of the expenditure so required: