"This court finds no fault with the form of the submission of the question raised as to appellant's mental capacity to execute the notes in suit--it having been a simple inquiry as to whether she had “sufficient mental capacity to execute said notes”, followed by the definition: “By the term ‘mental capacity’ is meant the possession of sufficient mind and memory to understand the nature and effect of her act in executing the notes inquired about.” Evidence supported finding of capacity where attorney and doctor testified to contestant's sanity and jury in previous murder trial disregarded her insanity defense.