The disability of persons who are incapacitated to deal with their real property by reason of intoxication is much the same as that of insane persons. In fact, the rules to be applied are those which determine the soundness of the understanding of the person. Unsoundness of mind may as well result from intoxication as from insanity, and, indeed, in many cases habitual drunkenness leads to insanity. Conveyances by such persons are voidable,26 though it might be that in states where a drunkard may be placed under guardianship deeds made by him after that time would be void.27