1. A person who is a beneficiary under a will has such a pecuniary interest in the estate of the testator as entitles him, under Section 12079, General Code, to contest another alleged will of the same testator which would destroy, reduce or impair his share in such estate.

2. _ The mental condition of the testator at the time of making a will determines the testamentary capacity of such testator; and evidence of his mental and physical condition within a reasonable time before and after the making of the will is admissible as throwing light on his mental condition at the time of the execution of the will in question.

3. In an action to contest a will upon the ground of the mental incapacity of the testator, an adjudication of the insanity of the testator and the establishment of, a guardianship on the gi ound of insanity is admissible in evidence as bearing upon the testamentary capacity of the testator at the date of the execution of such will. v

4. Wfiile every person is presumed to be of sound mind, yet when a person has been declared insane by a court of competent jurisdiction and is. under guardianship, the presumption of sanity is not only removed but a presumption of insanity arises. Where a will of such a person, made after such adjudication, having been admitted to probate, becomes the subject of a will contest, the burden of proof by statute being cast upon the contestants of the will, the presumption of continuance of such insanity was a rebuttable one and would be removed when sufficient evidence had been introduced to meet, extinguish, rebut, countervail or overcome such presumption arising fiom the adjudication of insanity.

5. The degree of proof necessary to remove a presumption is not to be confused with the degree necessary to sustain the burden of proof. When a party is not required to sustain the burden of proof upon some particular issue, a rebuttable presumption arising out of such issue may be overcome by evidence which counterbalances the evidence to sustain the presumption; however, when such party is required to assume the burden of proof upon an issue, any rebuttable presumption arising therefrom must be removed by the same degree of proof necessary to sustain the issue.

6.In a will contest, by virtue of the statute, the burden of proof is cast upon the contestant of the will and such burden never shifts from him; and before a jury would be justified in setting aside a will, the evidence adduced m the case against the will must outweigh both the evidence adduced in favor of the will and the presumption arising from the order of the Probate Court admitting the will to probate as the valid last will and testament of the "fc©St£l"b©T