All conveyances of real estate which were recorded by a clerk of court or register of deeds of any of the several counties between December 14, 1876 and May 1, 1882, without the endorsement of the auditor of the county, have heretofore been declared to be as valid and binding, to all intents and purposes, as if such conveyances had been endorsed by the auditor of the county, as required by law.