This Act shall not extend to any will made before the first day of January one thousand eight hundred and thirty-eight, and every will re-executed or republished, or revived by any codicil, shall for the purposes of this Act be deemed to have been made at the time at which the same shall be so re-executed, republished or revived; and this Act shall not extend to any estate pur autre vie of any person who shall die before the first day of January one thousand eight hundred and thirty-eight.