The managers of each crematory shall keep books of record, which shall be open at reasonable times for inspection, in which shall be entered the name, age, sex and residence of each dead body cremated, together with the authority for such cremation and the disposition of the ashes. The owner or manager of each crematory shall immediately forward to the registrar by whom the permit required by section 1703 was issued a certified duplicate of the record, which duplicate the registrar shall keep on file and record with other vital statistics. When any dead body is removed from this Territory for the purpose of cremation, the person having the legal custody and control of the dead body shall cause a certificate to be procured from the person in charge of the crematory in which the body is cremated, stating the facts called for in this section, and cause the certificate to be filed on record with the registrar by whom the permit was issued.