SECTION  974 . Right of Employees to Engage in Additional Employment . — Upon authorization by the Director of the Weather Bureau any third-class observer, rain observer, or assistant to a first-class observer, may engage in private business or accept employm ent from another branch of the Insular or Federal Government and receive compensation therefor; but additional Government employment shall be entered upon only after arrangement therefor shall have been mutually agreed upon between the Director of the Weat her Bureau and the head of the other Bureau or Office concerned. [807-1.] Bureau of Lands Organization of Bureau SECTION  976 . Chief Officials of Bureau of Lands . — The Bureau of Lands shall have one chief and one assistant chief, to be known respectively as the Director of Lands and the Assistant Director of Lands. [1407-6.] SECTION  977 . Functions of Bureau of Lands . — The Bureau of Lands shall be charged with the administration of all laws relative to public agricultural and mineral lands, the friar lands, and other public property placed under its control by legislative enac tment or competent administrative authority. The said Bureau shall conduct surveys of the public domain and other public property, cadastral surveys, and official surveys of private property, and shall exercise such other powers as are hereinafter conferred. SaDICE All existing records of Spanish grants and concessions of agricultural or mineral lands shall be preserved in the Bureau of Lands. [218-1, 3; 915-2; 1705-1; 1875-2, 4; 1937-1; 2259-1-5.] SECTION  978 . Authority of Officers to Administer Oaths and Take Testimony . — The Director of Lands, the Assistant Director of Lands, and the chiefs of division in the Bureau of Lands are authorized to administer oaths and take acknowledgments in matters of  official business, and to take testimony in official investigations conducted under the authority of the laws and regulations ARTICLE  I CHAPTER  30 Copyright 2012 CD Technologies Asia, Inc. and Accesslaw, Inc. Philippine Law Encyclopedia 2011 294