Strangest Section in the U.S. Code?

48 U.S.C. s. 1411, Guano districts; claim by United States

Whenever any citizen of the United States discovers a deposit of guano on any island, rock, or key, not within the lawful jurisdiction of any other government, and not occupied by the citizens of any other government, and takes peaceable possession thereof, and occupies the same, such island, rock, or key may, at the discretion of the President, be considered as appertaining to the United States.

Of course, guano is bird shit. So if you find a big deposit of bird shit, outside of the lawful jurisdiction of other countries, it's yours--er, the U.S.'s.