original Indian title

mere possession not specifically recognized as ownership by Congress. After conquest they were permitted to occupy portions of territory over which they had previously exercised 'sovereignty,' as we use that term. This is not a property right but amounts to a right of occupancy which the sovereign grants and protects against intrusion by third parties but which right of occupancy may be terminated and such lands fully disposed of by the sovereign itself without any legally enforceable obligation to compensate the Indians.