Section 23
SEC. 23. All work of repair, construction, or equipment of roads, buildings, and public improvements involving a greater cost than one thousand dollars, in money of the United States, shall be let to the lowest responsible bidder, after ten days' public notice of the letting by advertisement in a paper of general circulation in the province, or, if there is no such paper, by a notice posted for ten days at the main entrance of the engineer's office in the capital of the province, and at the door of the office of the secretary of the district in which the work is to be done. If the provincial legislative council shall regard the contract to be let and the work to be done of sufficient magnitude, it may direct the engineer, in addition to giving the public notice above required, to advertise for bids in a newspaper published in the city of Manila. The provincial engineer is authorized to reject any or all bids, and if the bids are too high, he may recommend to the council that he be allowed to purchase the material and hire the labor and himself supervise the work, and the legislative council may then authorize such a course.