Registration of Deeds Act 1856

That the Registrar shall also carefully enrol in a particular book, to be kept by him for that purpose, any instrument affecting lands, tenements or hereditaments in this State, which shall be delivered to him for the purpose of enrolment; and he shall also keep an alphabetical index of the names of the parties to such instruments, and of the district, letter and number by which such lands are therein particularised, with accurate references in such index to the number and page of enrolment to which any entry in such index shall relate.