A controversy developed between P and D as to the ownership of what is designated on the map of Texas as Greer County. The Attorney General of P was authorized and directed to commence and prosecute on behalf of P a proper suit in equity in Supreme Court D, setting forth the title of P to the country lying between the North and South Forks of the Red River where the Indian Territory and the State of Texas adjoin, east of the one-hundredth degree of longitude, and claimed by P as within its boundary. D filed a demurrer, and, also, an answer denying the material allegations of the bill. The case before the court only upon the demurrer. D claims the question presented is political in its nature and character, and not susceptible to judicial determination. The relief asked is a decree determining the true line between P and D and whether the land constituting what is called 'Greer County,' is within the boundary and jurisdiction of P or D. The government prays that its rights, as asserted in the bill, be established and that it have such other relief as the nature of the case may require.