"4th. When any person applies to enter a tract of such lands, claiming the right to do so by such prior abandoned claim, you will order a hearing, notifying the railroad company, as well as the pre-emption or homestead claimant, so that they may produce such evidence in support of their right as they may have to furnish. Your inquiry must be directed to the personal qualifications of the original claimant, and his compliance with the law prior to filing an entry; and I desire to enjoin upon you the necessity of excluding all testimony not material to showing the facts upon the subject of inquiry. You will, however, be careful that all such facts are brought out, and if necessary to this end you will yourselves examine and question the witnesses. You will in all cases give the parties interested personal notice of the time and place of hearing, when their whereabouts are known, or they can be reached by such notice. In other cases you will cause the notice of contest to be published at least once a week for four weeks in the newspaper having the largest circulation in the vicinity of the land. Parties initiating a contest must provide for defraying the expenses thereof, but when the case comes before you for trial you can apportion the expenses according to the equities of each case. Your particular attention is called to the fact that in some of the earlier railroad grants, lands covered by homestead claims, which may subsequently be cancelled, are not exempted from the operation of the grant. Therefore, in such cases, the tracts revert to the grant, and you will recognize no application for these lands by other parties, but will pay due regard to the rights of the grantees. You will in no case allow pre-emption filing, or homestead entry on this class of lands, without instructions from this office."