The general issue, or the plea of "not guilty," is the last and most usual of those answers to the indictment which we have enumerated, the others being all of extremely rare occurrence in the modern practice of the criminal law. By this plea, the accused puts himself upon his county, which county the jury are. The sheriff of the county must then return a panel of jurors. In England the jurors are taken from the "jurors' book" of the current year. It must be observed, that a new jurors' book comes into operation on the first of January in each year, having previously been copied from the lists of those liable to serve on juries, made out in the first instance, between the months of July and October, both inclusive, by the churchwardens and overseers of each parish, then reviewed and confirmed by the justices of the peace in petty sessions, and, through the high constable of the district, delivered to the next quarter sessions. If the proceedings are before the Queen's Bench, an interval is allowed by the court, in fixing the time of trial, for the impanneling of the jury, upon a writ issued to the sheriff for that purpose. The trial in a case of misdemeanour in the Queen's Bench is had at _nisi prius_, unless it be of such consequence as to merit a trial at bar, which is invariably had when the prisoner is tried for any capital offence in that court. But before the ordinary courts of assize, the sheriff, by virtue of a general precept directed to him beforehand, returns to the court a panel of not less than forty-eight nor more than seventy-two persons, unless the judges of assize direct a greater or smaller number to be summoned. When the time for the trial has arrived, and the case is called on, jurors, to the number of twelve, are sworn, unless challenged as they appear; their names being generally taken promiscuously, one by one, out of a box containing a number of tickets, on each of which a juror's name is inserted. Challenges may be made, either on the part of the crown or on that of the accused, and either to the whole array or to the separate polls. The challenge to the array, which must be made in writing, is an exception to the whole panel, on account of some partiality or default in the sheriff, or his officer, who arrayed the panel, the ground of which is examined into before the court. Challenges to the polls--_in capita_--are exceptions to particular persons, and must be made in each instance, as the person comes to the box to be sworn, and before he is sworn; for when the oath is once taken the challenge is too late.