18. The coroner shall make the necessary arrangements for conveying the body to the place of the inquest if he deems it necessary and shall take possession of all things which may be useful for the purposes of such inquest.
For the purposes of the inquest, the coroner may exercise the powers provided in the second paragraph of section 12.
He may also request a chemical analysis, but in such case he shall give notice thereof to the Attorney General who shall indicate the expert to whom the analysis is to be entrusted.