SECTION 1. The sum of one hundred thousand pesos appropriated for the locust campaign by Act Numbered Thirty-two hundred and seventeen, entitled "An Act appropriating funds for the necessary expenses of the Government of the Philippine Islands during the fiscal year aiding December thirty-first, nineteen hundred and twenty-five, and for other purposes," shall be disbursed by the Director of Agriculture, subject to the approval of the Secretary of Agriculture and Natural Resources, for the following purposes, and for no others, any provision of said Act Numbered Thirty-two hundred and seventeen to the contrary notwithstanding:
(a) For salaries, wages, and travel and subsistence expenses, when necessary, for the purpose of discovering and exterminating the locusts and their eggs in their breeding places or wherever they may be in any part of the Philippine Islands: Provided, That the salaries, wages, and travel expenses shall be payable only when the extermination of locusts is carried on in isolated and remote places ;
(b) For the purchase of chemicals, apparatus, and other articles, material, and technical equipment; the purchase of camping equipment for the men, such as tentage and kitchen utensils; and
(c) To defray the expense of research work carried on for the purpose of discovering more efficient and economic means of exterminating the locusts.