To remove all doubt as to the title of the purchasers and transferees, and their assigns, from the several railroad companies, of the land granted by the United States to the state, to aid in the construction of certain railroads in this state, by Act of Congress, approved May 17, 1856, the state has granted and confirmed to the purchasers and transferees from the several railroad companies which accepted the provisions of the act entitled, “An Act to provide for and encourage a liberal system of internal improvements in this state,” approved January 6, 1855, and their assigns, the lands and titles thereto, which were granted to the state by the United States to aid in the construction of certain railroads in this state by Act of Congress, approved May 17, 1856; which said lands were afterwards selected and located for the several railroad companies accepting the provisions of this act as aforesaid, along the line of their respective roads, to the extent and in the proportion to which they severally became entitled under the said act to provide for and encourage a liberal system of internal improvements in this state, and the said Act of Congress granted the same.