In re Fenwick (Deceased). Burns v Fenwick - [1957] NZLR 709

Will — Construction — Gift of Wild Duck Lake Sanctuary to Government "and approved fifty acres of land surrounding it" — Valid Gift — Exact Location of Boundaries at Discretion of Trustee of Will — Gift to Government of "£50 a year for the upkeep of fences" on Wild Duck Sanctuary — Perpetual Annuity — Provision of Capital Sum to produce, at 4¾ per centum per annum, Fifty Pounds a Year.