THATfor the services which may be rendered after the passage of this act, by the Registers and Receivers of the several Land Offices of the United States, in carrying out the provisions of the ninth section of the act of eleventh February, one thousand eight hundred and forty seven, entitled “An act to raise, for a limited time, an additional military force, and for other purposes,” they shall each be entitled to require from the holders of warrants issued under that act, for one hundred and sixty acres, the sum of fifty cents for each; and from the holders of warrants, issued under the same law, for forty acres, the sum of twenty=five cents for each, as full compensation for those services: Provided, That in all cases where the warrant is located by, and for the use of the volunteer or soldier to whom such warrant may have issued, for services rendered under the act aforesaid, no compensation shall be charged, either by the Register or Receiver, for making such location.