Appellants' Points of Error Nos. 15-39, 41 and 43, are not brief as required by Rule 418, Texas Rules of Civil Procedure, and therefore, they will be treated as waived and will not be considered. 4 Tex.Jur. 2, 167, appeal and error, Section 658; Hall v. Hall, (Tex.Civ.App.) 1962, 352 S.W.2d 765, no writ history; Stroud v. Jones, (Tex.Civ.App.) 1956, 295 S.W.2d 491, writ refused, n.r.e.; Lowe v. Valdez, (Tex.Civ.App.) 1964, 380 S.W.2d 200, no writ history. The Appellants also contend that the Court in holding that Mary Gein Burns and husband, Joe Burns, and Richard E. McDaniel, Billy Hunt and Robert Fairchild own no interest in the land except a mineral estate is contrary to the great weight and preponderance of the evidence and is manifestly wrong and unjust.