263. When an officer considers it necessary to incur 
expenditure on a service for which there is provision 
in the Hstimates but the expenditure on which has 
hot been authorised in the General Warrant, he will, 
as soon as possible and before incurring the expen- 
diture, submit a Requisition in. duplicate stating the 
whole extent and estimated cost of the service required, 
and giving all details as far as he is able. In the case 
of any public works, plans, specifications, tenders, and 
estimates, as far as practicable, should accompany the 
Requisition. 
264. The head of the department responsible for 
the expenditure will examine the Requisition, fill in 
from his departmental vote account the statement of 
expenditure already incurred or authorised, counter- 
sign it, and forward it to the Treasurer for submission 
to the Governor. 
265. It is the duty of the Treasurer on receipt of a 
Requisition to satisfy himself that the expenditure for 
which authority is required is sufficiently provided for 
in the Estimates, or by Special Warrant, and that it 
18 proposed to be charged against the proper head and 
sub-head; that the particulars given in the Requi- 
sition are accurate and sufficient for the guidance of 
the Governor in considering the propriety of the ex- 
penditure, and that all regulations which may affect 
the duty of the officer concerned in respect of the 
Requisition have been complied with. He will obtain 
from the officer any information that may be neces- 
sary for the assistance of the Governor, and will return 
the Requisition for amendment, if incomplete or 
Indefinite. In forwarding the Requisition, the 
Treasurer will advise as to the funds available for 
Meeting the proposed expenditure, having due regard 
to the whole of the services which appear likely to 
be chargeable against the subhead in the course of 
the year. Both copies of the Requisition, with the