The Tryal Of Robert Earl of Oxford and Earl Mortimer, Upon The Impeachment Of The House of Commons: Exhibited against him for High Treason, and other High Crimes and Misdeameanours. Begun in Westminster-Hall on Monday the 24th Day of June 1717, and from thence continued, by several Adjournments, to the First Day of July following. With The Proceedings relating to the said Tryal