Section 3
SEC. 3. Section 5 of said Act is hereby amended by making all of said section prior to rule (a) read as follows: "The work herein provided for shall, as far as practicable, be done and the necessary materials purchased by contract or contracts with private individuals or corporations. Bids for doing the same shall be advertised for and the contracts for doing the same shall be awarded to the lowest responsible bidder or bidders, except as hereinafter provided. "When the Chief Engineer shall decide that public exigency requires the immediate delivery of any article or performance of any service, the article or service required may he procured by open purchase or hire at the places and in the manner in which articles are usually bought and sold or such services engaged between individuals, provided the price of such article or service does not in any single instance exceed five thousand dollars Mexican: Provided, That the Chief Engineer is hereby authorized to make contracts for the work of harbor improvements as projected and set forth in said modified plans and specifications prepared by him as above set forth, in addition to the sum already appropriated, to an amount not exceeding two million dollars, money of the United States. Additional appropriations will be made from time to time to make payments for said contracts on or before the exhaustion of funds available for said contracts. And provided further, that in the improvement of the Pasig River and the canal between the harbor and the river, the Chief Engineer may cause the work to be done by the use of hired labor and purchase of materials without first advertising for bids, if in his opinion this method is most economical and advantageous to public interests. "The Chief Engineer may advertise and contract for the doing of the work prescribed by this act either as a whole or in parts, as he he may deem most advantageous to the public interests. "In making such advertisements or contracts be shall observe the following general rules and regulations, viz:"