“ As our construction of the act of Congress determines the question presented for decision, it becomes unnecessary to review the cases which have been called to our attention supporting, on the one hand, or denying, on the other, the broad contention that title by adverse possession, under state statutes of limitation, may be acquired by individuals to land within the right of way of a railroad. ”

“ Rep. 794, 799, speaking of the very grant under consideration: 'By granting a right of way 400 feet in width, Congress must understood to have conclusively determined that a strip of that width was necessary for a public work of such importance.' Neither courts nor juries, therefore, nor the general public, may be permitted to conjecture that a portion of such right of way is no longer needed for the use of the railroad, and title to it has vested in whomsoever chooses to occupy the same. ”

“ Rep. 210, and approvingly referred to in Shively v. Bowlby, 152 U.S. 1, 44, 38 L. ed. 331, 347, 14 Sup. Ct. Rep. 548, 564, viz.: 'The courts of the United States will construe the grants of the general government without reference to the rules of construction adopted by the states for their grants ”