NANA ASANI  II  v. ATTA PANYIN AND ANOTHER AND ATTA PANYIN AND ANOTHER v. ESSUMANG (CONSOLIDATED) Customary law—Stool—Stool land—Interest of subject in stool land—Determinable or usufructuary interest—Effect of denial of title of stool overlord by subject on subject's usufructuary title—What constitutes such denial—Whether stranger-farmers on subject's land must attorn tenant to overlord.