boilers, forges, and other manufacturing and heatin g appliances in accordance with the law and ordinance relating thereto. 

[ 1963-12.] 

SECTION 2538 . Contracts . — All repair or construction of any work or public improvement, except roads, involving a greater cost than one thousand pesos, shall be let to the lowest responsible bidder after public advertisement for not less than ten days in a paper of general circulation in the city, if any, by publication in one or more of the newspapers in the city of Manila, and by notice posted for not less than ten days at the main entrance of the municipal building. A plan or profile of the work to be d one, accompanied by specifications for the performance of the same, shall, before advertisement, be placed on file in the offices of the city engineer in Baguio and of the Director of Public Works in the city of Manila, which plan, profile, and specificati ons shall, at all proper times, be open for public inspection. Each bid shall be accompanied by a deposit, the amount and character of which shall be fixed by the city engineer and named in the advertisement, and which shall not exceed ten per centum of th e estimated cost of the improvement or work to be done where the estimated cost exceeds two thousand pesos, nor be less than two hundred pesos in any case. Such deposit shall be forfeited to the city if the bidder shall neglect or refuse to enter into a co ntract, with approved sureties, to execute the work for the price mentioned in his bid and according to the plans and specifications, in case the contract shall be awarded to him. Bonds, to be approved by the city engineer, shall be taken for the faithful performance of contracts. The city engineer may, in his discretion, reject any and all bids, and if such bids are too high may purchase the material, hire the laborers, and supervise the work. In the repair or construction of city roads, work may be done b y day labor and there need be no advertising or bidding, unless it seems desirable to the city engineer, when the regulations provided for the repair of other works hereinbefore mentioned shall be followed. ATcaEH 

Public works of all kinds costing less than one thousand pesos may be undertaken either by day labor or by contract, and may be let without advertisement under such rules as may by the city engineer be prescribed. Such contracts may be signed, on written o rder of the mayor, by the city engineer. 

[1963-13.] 

SECTION 2539 . Purchases for City . — The Purchasing Agent shall purchase all supplies, equipments, material, and property of every kind, except real estate, for the use of the city or any department or office thereof, and shall supply the same to the city o r any department or office thereof in accordance with law. But contracts for completed work of any kind for the use of the city, or any 

