_They Must Investigate and Determine the Facts._—After being sworn by the coroner they must investigate and determine and are the sole arbiters of the facts; the coroner’s duty being to instruct them in the law. They must go, view, and examine the body together, and not separately. It is essential to the validity of the inquest that the jury should view the body.[546] _Coroner may Compel Attendance of Witnesses._—When the coroner sits to hold an inquest, he sits as a judicial officer, armed with all the ordinary powers possessed by judicial officers. He may compel the attendance of jurors whose qualifications are usually such as are required of jurors in a court of record. It is his duty to present before the jury all the material testimony within his power, touching the death as to the manner whereof the jury are to certify, and that which makes for as well as against the party accused. It is his duty to summon before his inquest every person whom he has any reason to believe possesses any knowledge relative to the death which he is investigating. He is to summon such persons to attend before him for examination. He has full authority to compel obedience to his subpœnas. He has this power by the common law.[547] If a post-mortem examination is made, the examining surgeons should testify before the jury as to the matters disclosed by the examination.[548] The witnesses produced must be sworn by the coroner, and their testimony reduced to writing by him or under his direction. RIGHTS OF ACCUSED PARTY. The coroner is not required to take the testimony of the witnesses who are examined before the jury in the presence of the party accused. The accused has not the right to be represented by counsel, or to cross-examine the witnesses.[549] He is not permitted to produce witnesses before the coroner to show himself innocent of the crime. The coroner is not required to examine any witnesses to establish the guilt of such party when brought before him by virtue of process issued after the finding of the inquisition.[550]