pating royalty interest to Standley Motors, Inc. On May 1, 1964, Mr. Stewart and his wife conveyed the tract by a general warranty deed to Standley, Sr. as an individual. Heath acquired title to both tracts from Standley, Sr., et ux, by a general warranty deed, dated April 24,1958. The Heath deed did not expressly except the prior Standley Motors reservation, but it did refer to the Stewart-Standley, Sr. deed in its general description of the second tract of land. The deed expressly reserved a Vwth non-participating 20-year term royalty interest in Standley, Sr. and provided if a commercial production of oil was being produced at the end of the 20 years, the reservation would continue as long as the commercial production continued.
Standley, Sr. was divorced on September 24, 1959, and was awarded all the personal and real property of Standley Motors, Inc. The corporation was dissolved on December 16, 1959 and its assets passed to Standley, Sr. as the sole stockholder. Scholz and Heath executed the Scholz deed on July 16, 1971. In 1978 on the 24th of April, Stand-ley, Sr.’s term royalty lapsed due to the lack of oil and gas production.
In his first and third points of error, Scholz does not contest the trial court’s findings of fact, but complains of the court’s failure to make additional findings. Scholz did rtot make a request for additional findings in accordance with Rule 298, Vernon’s Tex.Rules Civ.Proc. Not having properly requested the findings, Scholz cannot now be heard to complain of the trial court’s failure to make the additional findings.
Tidwell v. Lange, 531 S.W.2d 384 (Tex.Civ.App.—Waco 1975, no writ). Points of error 1 and 3 are overruled.
Scholz’s point of error 2 contests the trial court’s finding that the grantors retained a one-half mineral and royalty interest. Scholz contends, at the time the Scholz deed was executed, Heath only owned a one-half mineral interest which he conveyed to Scholz and a possibility of re-verter in the Standley, Sr. royalty reservation. When the reservation lapsed, Scholz claims the interest vested in him due to a doctrine expressed in Ladd v. Du Bose, 344 S.W.2d 476 (Tex.Civ.App.—Amarillo 1961, no writ). In Du Bose, the issue was whether the grantors or grantee owned a one-fourth mineral interest that reverted at the termination of a term reservation which was made in a prior conveyance. The court found that the grantors held a possibility of reverter in the one-fourth mineral interest at the time of the conveyance, but failed to reserve the interest in the grantee’s deed. Therefore, the grantors conveyed the possibility of reverter to the grantee which reverted upon termination of the determinable fee to the grantee. Contrary to Du Bose, the grantor in the instant case, expressly excepted the Standley term reservation in the Scholz deed. An interest excepted from a grant is excluded from the grant and does not pass to the grantee. Martin v. Schneider, 622 S.W.2d 620 (Tex.App.—Corpus Christi 1981, no writ); York v. Kenilworth Oil Co., 614 S.W.2d 468 (Tex.Civ.App.—Waco 1981, writ ref’d, n.r.e.). In 1978, when the 20 years terminated, the royalty could not pass to Scholz, but vested in Heath. Scholz’s point of error 2 is overruled.
Heath’s first point of error contends the trial court erred in admitting parol evidence to interpret an unambiguous deed. The record reveals the trial judge found the Scholz deed to be ambiguous and admitted into evidence the parties’ prior earnest money contract which pertinent part read:
Sellers, herein agree to convey to Buyers an undivided one-half (½) interest in and to all the minerals in and under the said above described premise.
Parol evidence may be used where a writing, on its face, is ambiguous. A writing is ambiguous where the language used may be subject to two or more interpretations. Smith v. Liddell, 367 S.W.2d 662 (Tex.1963).
When a deed attempts to convey half of an entire mineral estate and excepts a prior one-half royalty while simultaneously reserving a half mineral estate, ambiguity arises as to whether the grantor or grantee receives a one-half royalty interest.