A desert-land entry within the exterior limits of a Government reclamation project may be assigned in whole or in part under section 324 of this title , and the benefits and limitations of section 448 of this title shall apply to such desert-land entryman and his assignees: Provided, That all such assignments shall conform to and be in accordance with farm units to be established by the Secretary of the Interior upon the application of the desert-land entryman. All such assignments made in good faith prior to July 24, 1912 , shall be recognized under this section. (July 24, 1912, ch. 251, 37 Stat. 200 .)