298 THE USE BOOK. 



which they have worked to their customary condition, to the 

 satisfaction of the field officer in charge. 



12. All permits shall be terminable at the discretion of the 

 Secretary having jurisdiction. 



13. The field officer in charge of the land owned or controlled 

 by the Government of the United States shall, from time to time, 

 inquire and report as to the existence, on or near such lands, of 

 ruins and archaeological sites, historic or prehistoric ruins or 

 monuments, objects of antiquity, historic landmarks and pre- 

 historic structures, and other objects of historic or scientific 

 interest. 



14. The field officer in charge may at all times examine the 

 permit of any person or institution claiming privileges granted 

 in accordance with the acts and these rules and regulations, 

 and may fully examine all work under such permit. 



15. All persons duly authorized by the Secretaries of Agricul- 

 ture, War, and Interior may apprehend or cause to be arrested, 

 as provided in the act of February 6, 1905 (33 Stat., 700), any 

 person or persons who appropriate, excavate, injure, or destroy 

 any historic or prehistoric ruin or monument or any object of 

 antiquity on lands under the supervision of the Secretaries of 

 Agriculture, War, and Interior, respectively. 



NOTE. For copy of the act of February 6, 1905, see p. 

 203. 



16. Any object of antiquity taken, or collection made, on lands 

 owned or controlled by the United States without a permit, as 

 prescribed by the act and these rules and regulations, or there 

 taken or made, contrary to the terms of the permit or contrary 

 to the act and these rules and regulations, may be seized, 

 wherever found and at any time, by the proper field officer or by 

 any person duly authorized by the Secretary having jurisdic- 

 tion, and disposed of as the Secretary shall determine, by de- 

 posit in the proper national depository or otherwise. 



17. Every collection made under the authority of the act and 

 of these rules and regulations shall be preserved in the public 

 museum designated in the permit and shall be accessible to the 

 public. No such collection shall be removed from such public 

 museum without the written authority of the Secretary of the 

 Smithsonian Institution, and then only to another public 

 museum, where it shall be accessible to the public ; and when 

 any public museum, which is a depository of any collection 

 made under the provisions of the act and these rules and regu- 

 lations, shall cease to exist, every such collection in such public 

 museum shall thereupon revert to the national collections and 

 be placed in the proper national depository. . 



