The Smithsonian Institution shall (a) determine the policy, prescribe conditions under which studies may be pursued within the area, and promulgate regulations for carrying out the purposes of this subchapter; (b) be responsible for the construction and maintenance of laboratory and other facilities on the area provided for the use of students authorized to carry on studies within the confines of the area; (c) deposit into the Treasury of the United States sums donated or subscribed or collected to be expended for carrying out the purposes of this subchapter; (d) in its discretion, fixed ¹ charges that may be made for use of laboratory or other facilities provided students authorized to make observations and investigations within the prescribed area and provide for the collection of such sums for deposit into the Treasury of the United States; (e) make such disposal of any moneys donated, subscribed, collected, or otherwise provided as in its judgment is to the best interest in carrying out the purpose of this subchapter: Provided, That sums contributed or appropriated for specific purposes shall be used for such purpose only; and (f) include in its annual report of its operations to Congress a statement of activities and operations during the preceding year.