The Marriage Registrar shall forthwith separate the certificate from the marriage-register-book and send it, at the end of every month, to the Registrar General of Births, Deaths and Marriages.

Custody of register-book.— The Marriage Registrar shall keep safely the said register-book until it is filled, and shall then send it to the Registrar General of Births, Deaths and Marriages, to be kept by him with the records of his office.