Where any beneficial interest in real estate or land of a deceased person, whether the estate or interest of such deceased person therein was legal or equitable, is owing to the failure of the objects of the devise or other circumstances happening before or after the death of such person in whole or in part not effectually disposed of, such person shall be deemed for the purposes of this part of this Act to have died intestate in respect of such part of the said beneficial interest as if ineffectually disposed of.