Should such bonds be issued under the provisions of this act N.M. Stat. Ann. § 73-8-1 to 73-8-60 for the purposes herein expressed, the same and the interest thereon, and all payments due or to become due the ensuing year to the United States under any contract between the district and the United States, accompanying which bonds of the district have not been deposited with the United States as aforesaid, shall be paid by revenue derived from an annual assessment upon the real property of the district, and such real property shall be and remain liable to be assessed for such payments as herein provided.