SEC. 8. _And be it further enacted_, That if any person other than an Indian, shall, within the limits of any tribe with whom the United States shall have existing treaties, hunt, or trap, or take and destroy, any peltries or game, except for subsistence, in the Indian country, such person shall forfeit the sum of five hundred dollars, and forfeit all the traps, guns, and ammunition in his possession, used or procured to be used for that purpose, and peltries so taken. SEC. 9. _And be it further enacted_, That if any person shall drive, or otherwise convey, any stock of horses, mules, or cattle, to range and feed on any land belonging to an Indian or Indian tribe without the consent of such tribe, such person shall forfeit the sum of one dollar for each animal of such stock. SEC. 10. _And be it further enacted_, That the superintendent of Indian affairs, and Indian agents and sub-agents, shall have authority to remove from the Indian country all persons found therein contrary to law; and the President of the United States is authorized to direct the military force to be employed in such removal. SEC. 11. _And be it further enacted_, That if any person shall make a settlement on any lands belonging, secured, or granted by treaty with the United States to any Indian tribe, or shall survey or shall attempt to survey such lands, or designate any of the boundaries by marking trees or otherwise, such offender shall forfeit and pay the sum of one thousand dollars. And it shall, moreover, be lawful for the President of the United States to take such measures, and to employ such military force, as he may judge necessary to remove from the lands as aforesaid any such person as aforesaid. SEC. 12. _And be it further enacted_, That no purchase, grant, lease, or other conveyance of lands, or of any title or claim thereto, from an Indian nation or tribe of Indians, shall be of any validity in law or equity, unless the same be made by treaty or convention entered into pursuant to the constitution. And if any person, not employed under the authority of the United States, shall attempt to negotiate such treaty or convention, directly or indirectly, to treat with any such nation or tribe of Indians for the title or purchase of any lands by them held or claimed, such person shall forfeit and pay one thousand dollars: _Provided, nevertheless_, That it shall be lawful for the agent or agents of any state who may be present at any treaty held with Indians under the authority of the United States, in the presence and with the approbation of the commissioner or commissioners of the United States appointed to hold the same, to propose to and adjust with the Indians the compensation to be made for their claim to lands within such state which shall be extinguished by treaty.