Form of real estate mortgage; effect; when covenants implied

Every such mortgage when otherwise duly executed, shall be deemed and held a good and sufficient mortgage in fee to secure the payment of the moneys therein specified; and if the same contains the words "and warrants", the same shall be construed the same as if full covenants of seizin, good right to convey against encumbrances, of quiet enjoyment and general warranty, as expressed in section one of this act were fully written therein; but if the words "and warrants" are omitted no such covenant shall be implied.