All bodies received at said morgue or morgues shall, if the coroner deems it necessary, be properly embalmed or prepared for preservation for such length of time as he may think proper (and shall be subjected to examination and inspection by such persons as he may, in writing, authorize to view the same, or who may be admitted in his presence), and said body or bodies shall be removed for burial only upon his certificate.
16 P.S. § 8435