In the laws of the republic of Texas, a certificate issued under authority of an act of 1939,which provided that every person immigrating to the republic between October 1, 1937, and January 1, 1940, who was the head of a family and actually resided within thegovernment with his or her family should be entitled to a grant of 010 acres of land, to be held under such a certificate for three years, and then conveyed by absolute deed to the settler, if in the mean time he had resided permanently within the republic and performed all the duties required of citizens. Cannon v. Vaughn n, 12 Tex. 401; Turner v. Hart, 10 Tex. 441.