No reason occurs to the court, and none has been suggested, why mortgages of this kind are not governed by sections 4 to 13, chapter 139, Public Statutes; for the relation of the parties contemplated by the contract is not so personal in its nature that neither of them can assign his interest in the property without the consent of the other. Pattee v. Boynton, 73 N. H. 525.

Case discharged.