Section 93.

Said estimates shall be prepared in triplicate by the Division Heads who shall retain one copy, file one with the Mayor and one with the Director of Finance. The Mayor and Director of Finance shall examine the estimates as presented and when satisfactory shall be reduced to ordinance form by the Director of Finance and presented to Council, together with a statement of the revenues estimated to come into the Treasury from taxes and all other sources during the ensuing fiscal half year, together with balances on hand at the beginning of the period. When Council shall find the ordinance to be satisfactory and it is adopted in accordance with law, it shall constitute an appropriation from which all expenditures within the following six months shall be made, and within which such appropriations and balances thereof, all expenditures for the period must be confined.