16 Declaration in writing sufficient to prove execution of any will, codicil, &c.U.K.

It shall and may be lawful to and for any attesting witness to the execution of any will or codicil, deed or instrument in writing, and to and for any other competent person, to verify and prove the signing, sealing, publication, or delivery of any such will, codicil, deed, or instrument in writing, by such declaration in writing made as aforesaid; and every such justice, notary, or other officer shall be and is hereby authorized and empowered to administer or receive such declaration.