The Register Books kept under this Act shall, as to Searches therein and Copies thereof and Extracts therefrom, be subject to the Regulations of the Act of the Session of the Sixth and Seventh Years of King William the Fourth (Chapter Eighty-six), " for " registering Births, Deaths, and Marriages in England," so far as those Regulations relate to Register Books of Burials kept by Rectors, Vicars, or Curates.