200 Use of instrument as evidence of transfer, etc.
title has been granted it becomes necessary to determine the fact
whether the transferee, mortgagee, encumbrancee or lessee is a
transferee, mortgagee, encumbrancee or lessee for valuable
consideration or not, any person who is party to the proceeding
may give in evidence any transfer, mortgage, encumbrance, lease
or other instrument or any caveat affecting the land in dispute,
although it is not referred to in the certificate of title or has been
cancelled by the Registrar.
RSA 1980 cL-5 s192