Section 53: In What Cases Prisoners May be Brought by Warrant to give Evidence.

A Judge may issue a warrant under his hand for bringing up any person confined as a prisoner under any sentence or order or commitment for trial, or otherwise, or under civil process to be examined as a witness in any cause or matter pending or to be inquired of in the Court.
Provided that such warrant shall not be granted as of course, unless the Judge shall have probable grounds for believing that the evidence of the prisoner is likely to prove material.