Conveying a Charge, or Dealing With Land by

Attorney in Fact. Before any person can convey, charge, or otherwise deal with registered land, or any estate or interest therein, as attorney in fact for another, the deed or instrument empowering him so to act shall be filed with the registrar, and a memorial thereof entered upon the original and duplicate copies. If the attorney shall so desire, the registrar shall deliver to him a certified copy of the power of attorney, with the endorsements thereon. Revocation of a power may be registered in like manner.