Section 20
SEC. 20. The requirements of this Act for entrance into the civil service, or for promotion by competitive examination, shall not apply to the selection of the Treasurer for the Islands, the Auditor for the Islands, the Collector of Customs for the Islands, the Deputy Collector of Customs for the Islands, the Collector of Inland Revenue for the Islands, the Director of Posts for the Islands, the head of the Bureau of Forestry, the head of the Bureau of Mines, the Superintendent of Public Instruction, the members of the Civil Service Board, or of one private secretary for the Military Governor and for each member of the United States Philippine Commission. But, after eighteen months from the date when the Board shall certify that it has a sufficient list of eligibles to supply vacancies, vacancies occurring in all the foregoing offices, except in the private secretaryships above described, shall be filled without examination from a class to be composed of the first, second, and third assistants in all the foregoing offices, the intention of this provision being that the appointing power may, by virtue hereof, transfer from one office to another a person deemed competent to fill the vacancy.