All sales of sixteenth section school lands in the state, made prior to the first day of January, 1900, are ratified and confirmed, notwithstanding informalities in the sales relative to appraisement and offering the lands in lots of forty acres, and other informalities, subject to the following provisions:
(1) That the parish treasurer or other officer making the sale made a deed to the purchaser;(2) That the filing of a deed by the parish treasurer reciting that an election was held in favor of the sale and that other formalities were complied with, or that he made the sale in obedience to an order to him directed from the auditor of public accounts, shall be proof that all formalities and prerequisites to the sale were complied with;(3) That where the deed recites that the transfer was made for a cash consideration, receipt of which is acknowledged, or where the sale was made for ten per cent cash and balance on terms of credit, and the mortgage records of the parish wherein the property is situated show a regular cancellation of the mortgage, the purchaser or his transferees may receive the full benefit of this Section;(4) That the purchaser or his transferees, if the sale was made on terms of cash and credit as hereinabove recited, and the mortgage was not cancelled, may pay into the state treasury that part of the credit portion of the purchase price as to which payment cannot be affirmatively shown, and then he may receive the full benefit of this Section.